imgui

glfw3.h (151427B)

---

 /*************************************************************************
  * GLFW 3.2 - www.glfw.org
  * A library for OpenGL, window and input
  *------------------------------------------------------------------------
  * Copyright (c) 2002-2006 Marcus Geelnard
  * Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
  *
  * This software is provided 'as-is', without any express or implied
  * warranty. In no event will the authors be held liable for any damages
  * arising from the use of this software.
  *
  * Permission is granted to anyone to use this software for any purpose,
  * including commercial applications, and to alter it and redistribute it
  * freely, subject to the following restrictions:
  *
  * 1. The origin of this software must not be misrepresented; you must not
  *    claim that you wrote the original software. If you use this software
  *    in a product, an acknowledgment in the product documentation would
  *    be appreciated but is not required.
  *
  * 2. Altered source versions must be plainly marked as such, and must not
  *    be misrepresented as being the original software.
  *
  * 3. This notice may not be removed or altered from any source
  *    distribution.
  *
  *************************************************************************/
 
 #ifndef _glfw3_h_
 #define _glfw3_h_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 
 /*************************************************************************
  * Doxygen documentation
  *************************************************************************/
 
 /*! @file glfw3.h
  *  @brief The header of the GLFW 3 API.
  *
  *  This is the header file of the GLFW 3 API.  It defines all its types and
  *  declares all its functions.
  *
  *  For more information about how to use this file, see @ref build_include.
  */
 /*! @defgroup context Context reference
  *
  *  This is the reference documentation for OpenGL and OpenGL ES context related
  *  functions.  For more task-oriented information, see the @ref context_guide.
  */
 /*! @defgroup vulkan Vulkan reference
  *
  *  This is the reference documentation for Vulkan related functions and types.
  *  For more task-oriented information, see the @ref vulkan_guide.
  */
 /*! @defgroup init Initialization, version and error reference
  *
  *  This is the reference documentation for initialization and termination of
  *  the library, version management and error handling.  For more task-oriented
  *  information, see the @ref intro_guide.
  */
 /*! @defgroup input Input reference
  *
  *  This is the reference documentation for input related functions and types.
  *  For more task-oriented information, see the @ref input_guide.
  */
 /*! @defgroup monitor Monitor reference
  *
  *  This is the reference documentation for monitor related functions and types.
  *  For more task-oriented information, see the @ref monitor_guide.
  */
 /*! @defgroup window Window reference
  *
  *  This is the reference documentation for window related functions and types,
  *  including creation, deletion and event polling.  For more task-oriented
  *  information, see the @ref window_guide.
  */
 
 
 /*************************************************************************
  * Compiler- and platform-specific preprocessor work
  *************************************************************************/
 
 /* If we are we on Windows, we want a single define for it.
  */
 #if !defined(_WIN32) && (defined(__WIN32__) || defined(WIN32) || defined(__MINGW32__))
  #define _WIN32
 #endif /* _WIN32 */
 
 /* It is customary to use APIENTRY for OpenGL function pointer declarations on
  * all platforms.  Additionally, the Windows OpenGL header needs APIENTRY.
  */
 #ifndef APIENTRY
  #ifdef _WIN32
   #define APIENTRY __stdcall
  #else
   #define APIENTRY
  #endif
 #endif /* APIENTRY */
 
 /* Some Windows OpenGL headers need this.
  */
 #if !defined(WINGDIAPI) && defined(_WIN32)
  #define WINGDIAPI __declspec(dllimport)
  #define GLFW_WINGDIAPI_DEFINED
 #endif /* WINGDIAPI */
 
 /* Some Windows GLU headers need this.
  */
 #if !defined(CALLBACK) && defined(_WIN32)
  #define CALLBACK __stdcall
  #define GLFW_CALLBACK_DEFINED
 #endif /* CALLBACK */
 
 /* Most Windows GLU headers need wchar_t.
  * The OS X OpenGL header blocks the definition of ptrdiff_t by glext.h.
  * Include it unconditionally to avoid surprising side-effects.
  */
 #include <stddef.h>
 #include <stdint.h>
 
 /* Include the chosen client API headers.
  */
 #if defined(__APPLE__)
  #if defined(GLFW_INCLUDE_GLCOREARB)
   #include <OpenGL/gl3.h>
   #if defined(GLFW_INCLUDE_GLEXT)
    #include <OpenGL/gl3ext.h>
   #endif
  #elif !defined(GLFW_INCLUDE_NONE)
   #if !defined(GLFW_INCLUDE_GLEXT)
    #define GL_GLEXT_LEGACY
   #endif
   #include <OpenGL/gl.h>
  #endif
  #if defined(GLFW_INCLUDE_GLU)
   #include <OpenGL/glu.h>
  #endif
 #else
  #if defined(GLFW_INCLUDE_GLCOREARB)
   #include <GL/glcorearb.h>
  #elif defined(GLFW_INCLUDE_ES1)
   #include <GLES/gl.h>
   #if defined(GLFW_INCLUDE_GLEXT)
    #include <GLES/glext.h>
   #endif
  #elif defined(GLFW_INCLUDE_ES2)
   #include <GLES2/gl2.h>
   #if defined(GLFW_INCLUDE_GLEXT)
    #include <GLES2/gl2ext.h>
   #endif
  #elif defined(GLFW_INCLUDE_ES3)
   #include <GLES3/gl3.h>
   #if defined(GLFW_INCLUDE_GLEXT)
    #include <GLES2/gl2ext.h>
   #endif
  #elif defined(GLFW_INCLUDE_ES31)
   #include <GLES3/gl31.h>
   #if defined(GLFW_INCLUDE_GLEXT)
    #include <GLES2/gl2ext.h>
   #endif
  #elif defined(GLFW_INCLUDE_VULKAN)
   #include <vulkan/vulkan.h>
  #elif !defined(GLFW_INCLUDE_NONE)
   #include <GL/gl.h>
   #if defined(GLFW_INCLUDE_GLEXT)
    #include <GL/glext.h>
   #endif
  #endif
  #if defined(GLFW_INCLUDE_GLU)
   #include <GL/glu.h>
  #endif
 #endif
 
 #if defined(GLFW_DLL) && defined(_GLFW_BUILD_DLL)
  /* GLFW_DLL must be defined by applications that are linking against the DLL
   * version of the GLFW library.  _GLFW_BUILD_DLL is defined by the GLFW
   * configuration header when compiling the DLL version of the library.
   */
  #error "You must not have both GLFW_DLL and _GLFW_BUILD_DLL defined"
 #endif
 
 /* GLFWAPI is used to declare public API functions for export
  * from the DLL / shared library / dynamic library.
  */
 #if defined(_WIN32) && defined(_GLFW_BUILD_DLL)
  /* We are building GLFW as a Win32 DLL */
  #define GLFWAPI __declspec(dllexport)
 #elif defined(_WIN32) && defined(GLFW_DLL)
  /* We are calling GLFW as a Win32 DLL */
  #define GLFWAPI __declspec(dllimport)
 #elif defined(__GNUC__) && defined(_GLFW_BUILD_DLL)
  /* We are building GLFW as a shared / dynamic library */
  #define GLFWAPI __attribute__((visibility("default")))
 #else
  /* We are building or calling GLFW as a static library */
  #define GLFWAPI
 #endif
 
 
 /*************************************************************************
  * GLFW API tokens
  *************************************************************************/
 
 /*! @name GLFW version macros
  *  @{ */
 /*! @brief The major version number of the GLFW library.
  *
  *  This is incremented when the API is changed in non-compatible ways.
  *  @ingroup init
  */
 #define GLFW_VERSION_MAJOR          3
 /*! @brief The minor version number of the GLFW library.
  *
  *  This is incremented when features are added to the API but it remains
  *  backward-compatible.
  *  @ingroup init
  */
 #define GLFW_VERSION_MINOR          2
 /*! @brief The revision number of the GLFW library.
  *
  *  This is incremented when a bug fix release is made that does not contain any
  *  API changes.
  *  @ingroup init
  */
 #define GLFW_VERSION_REVISION       0
 /*! @} */
 
 /*! @name Boolean values
  *  @{ */
 /*! @brief One.
  *
  *  One.  Seriously.  You don't _need_ to use this symbol in your code.  It's
  *  just semantic sugar for the number 1.  You can use `1` or `true` or `_True`
  *  or `GL_TRUE` or whatever you want.
  */
 #define GLFW_TRUE                   1
 /*! @brief Zero.
  *
  *  Zero.  Seriously.  You don't _need_ to use this symbol in your code.  It's
  *  just just semantic sugar for the number 0.  You can use `0` or `false` or
  *  `_False` or `GL_FALSE` or whatever you want.
  */
 #define GLFW_FALSE                  0
 /*! @} */
 
 /*! @name Key and button actions
  *  @{ */
 /*! @brief The key or mouse button was released.
  *
  *  The key or mouse button was released.
  *
  *  @ingroup input
  */
 #define GLFW_RELEASE                0
 /*! @brief The key or mouse button was pressed.
  *
  *  The key or mouse button was pressed.
  *
  *  @ingroup input
  */
 #define GLFW_PRESS                  1
 /*! @brief The key was held down until it repeated.
  *
  *  The key was held down until it repeated.
  *
  *  @ingroup input
  */
 #define GLFW_REPEAT                 2
 /*! @} */
 
 /*! @defgroup keys Keyboard keys
  *
  *  See [key input](@ref input_key) for how these are used.
  *
  *  These key codes are inspired by the _USB HID Usage Tables v1.12_ (p. 53-60),
  *  but re-arranged to map to 7-bit ASCII for printable keys (function keys are
  *  put in the 256+ range).
  *
  *  The naming of the key codes follow these rules:
  *   - The US keyboard layout is used
  *   - Names of printable alpha-numeric characters are used (e.g. "A", "R",
  *     "3", etc.)
  *   - For non-alphanumeric characters, Unicode:ish names are used (e.g.
  *     "COMMA", "LEFT_SQUARE_BRACKET", etc.). Note that some names do not
  *     correspond to the Unicode standard (usually for brevity)
  *   - Keys that lack a clear US mapping are named "WORLD_x"
  *   - For non-printable keys, custom names are used (e.g. "F4",
  *     "BACKSPACE", etc.)
  *
  *  @ingroup input
  *  @{
  */
 
 /* The unknown key */
 #define GLFW_KEY_UNKNOWN            -1
 
 /* Printable keys */
 #define GLFW_KEY_SPACE              32
 #define GLFW_KEY_APOSTROPHE         39  /* ' */
 #define GLFW_KEY_COMMA              44  /* , */
 #define GLFW_KEY_MINUS              45  /* - */
 #define GLFW_KEY_PERIOD             46  /* . */
 #define GLFW_KEY_SLASH              47  /* / */
 #define GLFW_KEY_0                  48
 #define GLFW_KEY_1                  49
 #define GLFW_KEY_2                  50
 #define GLFW_KEY_3                  51
 #define GLFW_KEY_4                  52
 #define GLFW_KEY_5                  53
 #define GLFW_KEY_6                  54
 #define GLFW_KEY_7                  55
 #define GLFW_KEY_8                  56
 #define GLFW_KEY_9                  57
 #define GLFW_KEY_SEMICOLON          59  /* ; */
 #define GLFW_KEY_EQUAL              61  /* = */
 #define GLFW_KEY_A                  65
 #define GLFW_KEY_B                  66
 #define GLFW_KEY_C                  67
 #define GLFW_KEY_D                  68
 #define GLFW_KEY_E                  69
 #define GLFW_KEY_F                  70
 #define GLFW_KEY_G                  71
 #define GLFW_KEY_H                  72
 #define GLFW_KEY_I                  73
 #define GLFW_KEY_J                  74
 #define GLFW_KEY_K                  75
 #define GLFW_KEY_L                  76
 #define GLFW_KEY_M                  77
 #define GLFW_KEY_N                  78
 #define GLFW_KEY_O                  79
 #define GLFW_KEY_P                  80
 #define GLFW_KEY_Q                  81
 #define GLFW_KEY_R                  82
 #define GLFW_KEY_S                  83
 #define GLFW_KEY_T                  84
 #define GLFW_KEY_U                  85
 #define GLFW_KEY_V                  86
 #define GLFW_KEY_W                  87
 #define GLFW_KEY_X                  88
 #define GLFW_KEY_Y                  89
 #define GLFW_KEY_Z                  90
 #define GLFW_KEY_LEFT_BRACKET       91  /* [ */
 #define GLFW_KEY_BACKSLASH          92  /* \ */
 #define GLFW_KEY_RIGHT_BRACKET      93  /* ] */
 #define GLFW_KEY_GRAVE_ACCENT       96  /* ` */
 #define GLFW_KEY_WORLD_1            161 /* non-US #1 */
 #define GLFW_KEY_WORLD_2            162 /* non-US #2 */
 
 /* Function keys */
 #define GLFW_KEY_ESCAPE             256
 #define GLFW_KEY_ENTER              257
 #define GLFW_KEY_TAB                258
 #define GLFW_KEY_BACKSPACE          259
 #define GLFW_KEY_INSERT             260
 #define GLFW_KEY_DELETE             261
 #define GLFW_KEY_RIGHT              262
 #define GLFW_KEY_LEFT               263
 #define GLFW_KEY_DOWN               264
 #define GLFW_KEY_UP                 265
 #define GLFW_KEY_PAGE_UP            266
 #define GLFW_KEY_PAGE_DOWN          267
 #define GLFW_KEY_HOME               268
 #define GLFW_KEY_END                269
 #define GLFW_KEY_CAPS_LOCK          280
 #define GLFW_KEY_SCROLL_LOCK        281
 #define GLFW_KEY_NUM_LOCK           282
 #define GLFW_KEY_PRINT_SCREEN       283
 #define GLFW_KEY_PAUSE              284
 #define GLFW_KEY_F1                 290
 #define GLFW_KEY_F2                 291
 #define GLFW_KEY_F3                 292
 #define GLFW_KEY_F4                 293
 #define GLFW_KEY_F5                 294
 #define GLFW_KEY_F6                 295
 #define GLFW_KEY_F7                 296
 #define GLFW_KEY_F8                 297
 #define GLFW_KEY_F9                 298
 #define GLFW_KEY_F10                299
 #define GLFW_KEY_F11                300
 #define GLFW_KEY_F12                301
 #define GLFW_KEY_F13                302
 #define GLFW_KEY_F14                303
 #define GLFW_KEY_F15                304
 #define GLFW_KEY_F16                305
 #define GLFW_KEY_F17                306
 #define GLFW_KEY_F18                307
 #define GLFW_KEY_F19                308
 #define GLFW_KEY_F20                309
 #define GLFW_KEY_F21                310
 #define GLFW_KEY_F22                311
 #define GLFW_KEY_F23                312
 #define GLFW_KEY_F24                313
 #define GLFW_KEY_F25                314
 #define GLFW_KEY_KP_0               320
 #define GLFW_KEY_KP_1               321
 #define GLFW_KEY_KP_2               322
 #define GLFW_KEY_KP_3               323
 #define GLFW_KEY_KP_4               324
 #define GLFW_KEY_KP_5               325
 #define GLFW_KEY_KP_6               326
 #define GLFW_KEY_KP_7               327
 #define GLFW_KEY_KP_8               328
 #define GLFW_KEY_KP_9               329
 #define GLFW_KEY_KP_DECIMAL         330
 #define GLFW_KEY_KP_DIVIDE          331
 #define GLFW_KEY_KP_MULTIPLY        332
 #define GLFW_KEY_KP_SUBTRACT        333
 #define GLFW_KEY_KP_ADD             334
 #define GLFW_KEY_KP_ENTER           335
 #define GLFW_KEY_KP_EQUAL           336
 #define GLFW_KEY_LEFT_SHIFT         340
 #define GLFW_KEY_LEFT_CONTROL       341
 #define GLFW_KEY_LEFT_ALT           342
 #define GLFW_KEY_LEFT_SUPER         343
 #define GLFW_KEY_RIGHT_SHIFT        344
 #define GLFW_KEY_RIGHT_CONTROL      345
 #define GLFW_KEY_RIGHT_ALT          346
 #define GLFW_KEY_RIGHT_SUPER        347
 #define GLFW_KEY_MENU               348
 
 #define GLFW_KEY_LAST               GLFW_KEY_MENU
 
 /*! @} */
 
 /*! @defgroup mods Modifier key flags
  *
  *  See [key input](@ref input_key) for how these are used.
  *
  *  @ingroup input
  *  @{ */
 
 /*! @brief If this bit is set one or more Shift keys were held down.
  */
 #define GLFW_MOD_SHIFT           0x0001
 /*! @brief If this bit is set one or more Control keys were held down.
  */
 #define GLFW_MOD_CONTROL         0x0002
 /*! @brief If this bit is set one or more Alt keys were held down.
  */
 #define GLFW_MOD_ALT             0x0004
 /*! @brief If this bit is set one or more Super keys were held down.
  */
 #define GLFW_MOD_SUPER           0x0008
 
 /*! @} */
 
 /*! @defgroup buttons Mouse buttons
  *
  *  See [mouse button input](@ref input_mouse_button) for how these are used.
  *
  *  @ingroup input
  *  @{ */
 #define GLFW_MOUSE_BUTTON_1         0
 #define GLFW_MOUSE_BUTTON_2         1
 #define GLFW_MOUSE_BUTTON_3         2
 #define GLFW_MOUSE_BUTTON_4         3
 #define GLFW_MOUSE_BUTTON_5         4
 #define GLFW_MOUSE_BUTTON_6         5
 #define GLFW_MOUSE_BUTTON_7         6
 #define GLFW_MOUSE_BUTTON_8         7
 #define GLFW_MOUSE_BUTTON_LAST      GLFW_MOUSE_BUTTON_8
 #define GLFW_MOUSE_BUTTON_LEFT      GLFW_MOUSE_BUTTON_1
 #define GLFW_MOUSE_BUTTON_RIGHT     GLFW_MOUSE_BUTTON_2
 #define GLFW_MOUSE_BUTTON_MIDDLE    GLFW_MOUSE_BUTTON_3
 /*! @} */
 
 /*! @defgroup joysticks Joysticks
  *
  *  See [joystick input](@ref joystick) for how these are used.
  *
  *  @ingroup input
  *  @{ */
 #define GLFW_JOYSTICK_1             0
 #define GLFW_JOYSTICK_2             1
 #define GLFW_JOYSTICK_3             2
 #define GLFW_JOYSTICK_4             3
 #define GLFW_JOYSTICK_5             4
 #define GLFW_JOYSTICK_6             5
 #define GLFW_JOYSTICK_7             6
 #define GLFW_JOYSTICK_8             7
 #define GLFW_JOYSTICK_9             8
 #define GLFW_JOYSTICK_10            9
 #define GLFW_JOYSTICK_11            10
 #define GLFW_JOYSTICK_12            11
 #define GLFW_JOYSTICK_13            12
 #define GLFW_JOYSTICK_14            13
 #define GLFW_JOYSTICK_15            14
 #define GLFW_JOYSTICK_16            15
 #define GLFW_JOYSTICK_LAST          GLFW_JOYSTICK_16
 /*! @} */
 
 /*! @defgroup errors Error codes
  *
  *  See [error handling](@ref error_handling) for how these are used.
  *
  *  @ingroup init
  *  @{ */
 /*! @brief GLFW has not been initialized.
  *
  *  This occurs if a GLFW function was called that must not be called unless the
  *  library is [initialized](@ref intro_init).
  *
  *  @analysis Application programmer error.  Initialize GLFW before calling any
  *  function that requires initialization.
  */
 #define GLFW_NOT_INITIALIZED        0x00010001
 /*! @brief No context is current for this thread.
  *
  *  This occurs if a GLFW function was called that needs and operates on the
  *  current OpenGL or OpenGL ES context but no context is current on the calling
  *  thread.  One such function is @ref glfwSwapInterval.
  *
  *  @analysis Application programmer error.  Ensure a context is current before
  *  calling functions that require a current context.
  */
 #define GLFW_NO_CURRENT_CONTEXT     0x00010002
 /*! @brief One of the arguments to the function was an invalid enum value.
  *
  *  One of the arguments to the function was an invalid enum value, for example
  *  requesting [GLFW_RED_BITS](@ref window_hints_fb) with @ref
  *  glfwGetWindowAttrib.
  *
  *  @analysis Application programmer error.  Fix the offending call.
  */
 #define GLFW_INVALID_ENUM           0x00010003
 /*! @brief One of the arguments to the function was an invalid value.
  *
  *  One of the arguments to the function was an invalid value, for example
  *  requesting a non-existent OpenGL or OpenGL ES version like 2.7.
  *
  *  Requesting a valid but unavailable OpenGL or OpenGL ES version will instead
  *  result in a @ref GLFW_VERSION_UNAVAILABLE error.
  *
  *  @analysis Application programmer error.  Fix the offending call.
  */
 #define GLFW_INVALID_VALUE          0x00010004
 /*! @brief A memory allocation failed.
  *
  *  A memory allocation failed.
  *
  *  @analysis A bug in GLFW or the underlying operating system.  Report the bug
  *  to our [issue tracker](https://github.com/glfw/glfw/issues).
  */
 #define GLFW_OUT_OF_MEMORY          0x00010005
 /*! @brief GLFW could not find support for the requested API on the system.
  *
  *  GLFW could not find support for the requested API on the system.
  *
  *  @analysis The installed graphics driver does not support the requested
  *  API, or does not support it via the chosen context creation backend.
  *  Below are a few examples.
  *
  *  @par
  *  Some pre-installed Windows graphics drivers do not support OpenGL.  AMD only
  *  supports OpenGL ES via EGL, while Nvidia and Intel only support it via
  *  a WGL or GLX extension.  OS X does not provide OpenGL ES at all.  The Mesa
  *  EGL, OpenGL and OpenGL ES libraries do not interface with the Nvidia binary
  *  driver.  Older graphics drivers do not support Vulkan.
  */
 #define GLFW_API_UNAVAILABLE        0x00010006
 /*! @brief The requested OpenGL or OpenGL ES version is not available.
  *
  *  The requested OpenGL or OpenGL ES version (including any requested context
  *  or framebuffer hints) is not available on this machine.
  *
  *  @analysis The machine does not support your requirements.  If your
  *  application is sufficiently flexible, downgrade your requirements and try
  *  again.  Otherwise, inform the user that their machine does not match your
  *  requirements.
  *
  *  @par
  *  Future invalid OpenGL and OpenGL ES versions, for example OpenGL 4.8 if 5.0
  *  comes out before the 4.x series gets that far, also fail with this error and
  *  not @ref GLFW_INVALID_VALUE, because GLFW cannot know what future versions
  *  will exist.
  */
 #define GLFW_VERSION_UNAVAILABLE    0x00010007
 /*! @brief A platform-specific error occurred that does not match any of the
  *  more specific categories.
  *
  *  A platform-specific error occurred that does not match any of the more
  *  specific categories.
  *
  *  @analysis A bug or configuration error in GLFW, the underlying operating
  *  system or its drivers, or a lack of required resources.  Report the issue to
  *  our [issue tracker](https://github.com/glfw/glfw/issues).
  */
 #define GLFW_PLATFORM_ERROR         0x00010008
 /*! @brief The requested format is not supported or available.
  *
  *  If emitted during window creation, the requested pixel format is not
  *  supported.
  *
  *  If emitted when querying the clipboard, the contents of the clipboard could
  *  not be converted to the requested format.
  *
  *  @analysis If emitted during window creation, one or more
  *  [hard constraints](@ref window_hints_hard) did not match any of the
  *  available pixel formats.  If your application is sufficiently flexible,
  *  downgrade your requirements and try again.  Otherwise, inform the user that
  *  their machine does not match your requirements.
  *
  *  @par
  *  If emitted when querying the clipboard, ignore the error or report it to
  *  the user, as appropriate.
  */
 #define GLFW_FORMAT_UNAVAILABLE     0x00010009
 /*! @brief The specified window does not have an OpenGL or OpenGL ES context.
  *
  *  A window that does not have an OpenGL or OpenGL ES context was passed to
  *  a function that requires it to have one.
  *
  *  @analysis Application programmer error.  Fix the offending call.
  */
 #define GLFW_NO_WINDOW_CONTEXT      0x0001000A
 /*! @} */
 
 #define GLFW_FOCUSED                0x00020001
 #define GLFW_ICONIFIED              0x00020002
 #define GLFW_RESIZABLE              0x00020003
 #define GLFW_VISIBLE                0x00020004
 #define GLFW_DECORATED              0x00020005
 #define GLFW_AUTO_ICONIFY           0x00020006
 #define GLFW_FLOATING               0x00020007
 #define GLFW_MAXIMIZED              0x00020008
 
 #define GLFW_RED_BITS               0x00021001
 #define GLFW_GREEN_BITS             0x00021002
 #define GLFW_BLUE_BITS              0x00021003
 #define GLFW_ALPHA_BITS             0x00021004
 #define GLFW_DEPTH_BITS             0x00021005
 #define GLFW_STENCIL_BITS           0x00021006
 #define GLFW_ACCUM_RED_BITS         0x00021007
 #define GLFW_ACCUM_GREEN_BITS       0x00021008
 #define GLFW_ACCUM_BLUE_BITS        0x00021009
 #define GLFW_ACCUM_ALPHA_BITS       0x0002100A
 #define GLFW_AUX_BUFFERS            0x0002100B
 #define GLFW_STEREO                 0x0002100C
 #define GLFW_SAMPLES                0x0002100D
 #define GLFW_SRGB_CAPABLE           0x0002100E
 #define GLFW_REFRESH_RATE           0x0002100F
 #define GLFW_DOUBLEBUFFER           0x00021010
 
 #define GLFW_CLIENT_API             0x00022001
 #define GLFW_CONTEXT_VERSION_MAJOR  0x00022002
 #define GLFW_CONTEXT_VERSION_MINOR  0x00022003
 #define GLFW_CONTEXT_REVISION       0x00022004
 #define GLFW_CONTEXT_ROBUSTNESS     0x00022005
 #define GLFW_OPENGL_FORWARD_COMPAT  0x00022006
 #define GLFW_OPENGL_DEBUG_CONTEXT   0x00022007
 #define GLFW_OPENGL_PROFILE         0x00022008
 #define GLFW_CONTEXT_RELEASE_BEHAVIOR 0x00022009
 #define GLFW_CONTEXT_NO_ERROR       0x0002200A
 
 #define GLFW_NO_API                          0
 #define GLFW_OPENGL_API             0x00030001
 #define GLFW_OPENGL_ES_API          0x00030002
 
 #define GLFW_NO_ROBUSTNESS                   0
 #define GLFW_NO_RESET_NOTIFICATION  0x00031001
 #define GLFW_LOSE_CONTEXT_ON_RESET  0x00031002
 
 #define GLFW_OPENGL_ANY_PROFILE              0
 #define GLFW_OPENGL_CORE_PROFILE    0x00032001
 #define GLFW_OPENGL_COMPAT_PROFILE  0x00032002
 
 #define GLFW_CURSOR                 0x00033001
 #define GLFW_STICKY_KEYS            0x00033002
 #define GLFW_STICKY_MOUSE_BUTTONS   0x00033003
 
 #define GLFW_CURSOR_NORMAL          0x00034001
 #define GLFW_CURSOR_HIDDEN          0x00034002
 #define GLFW_CURSOR_DISABLED        0x00034003
 
 #define GLFW_ANY_RELEASE_BEHAVIOR            0
 #define GLFW_RELEASE_BEHAVIOR_FLUSH 0x00035001
 #define GLFW_RELEASE_BEHAVIOR_NONE  0x00035002
 
 /*! @defgroup shapes Standard cursor shapes
  *
  *  See [standard cursor creation](@ref cursor_standard) for how these are used.
  *
  *  @ingroup input
  *  @{ */
 
 /*! @brief The regular arrow cursor shape.
  *
  *  The regular arrow cursor.
  */
 #define GLFW_ARROW_CURSOR           0x00036001
 /*! @brief The text input I-beam cursor shape.
  *
  *  The text input I-beam cursor shape.
  */
 #define GLFW_IBEAM_CURSOR           0x00036002
 /*! @brief The crosshair shape.
  *
  *  The crosshair shape.
  */
 #define GLFW_CROSSHAIR_CURSOR       0x00036003
 /*! @brief The hand shape.
  *
  *  The hand shape.
  */
 #define GLFW_HAND_CURSOR            0x00036004
 /*! @brief The horizontal resize arrow shape.
  *
  *  The horizontal resize arrow shape.
  */
 #define GLFW_HRESIZE_CURSOR         0x00036005
 /*! @brief The vertical resize arrow shape.
  *
  *  The vertical resize arrow shape.
  */
 #define GLFW_VRESIZE_CURSOR         0x00036006
 /*! @} */
 
 #define GLFW_CONNECTED              0x00040001
 #define GLFW_DISCONNECTED           0x00040002
 
 #define GLFW_DONT_CARE              -1
 
 
 /*************************************************************************
  * GLFW API types
  *************************************************************************/
 
 /*! @brief Client API function pointer type.
  *
  *  Generic function pointer used for returning client API function pointers
  *  without forcing a cast from a regular pointer.
  *
  *  @sa @ref context_glext
  *  @sa glfwGetProcAddress
  *
  *  @since Added in version 3.0.
  
  *  @ingroup context
  */
 typedef void (*GLFWglproc)(void);
 
 /*! @brief Vulkan API function pointer type.
  *
  *  Generic function pointer used for returning Vulkan API function pointers
  *  without forcing a cast from a regular pointer.
  *
  *  @sa @ref vulkan_proc
  *  @sa glfwGetInstanceProcAddress
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup vulkan
  */
 typedef void (*GLFWvkproc)(void);
 
 /*! @brief Opaque monitor object.
  *
  *  Opaque monitor object.
  *
  *  @see @ref monitor_object
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 typedef struct GLFWmonitor GLFWmonitor;
 
 /*! @brief Opaque window object.
  *
  *  Opaque window object.
  *
  *  @see @ref window_object
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 typedef struct GLFWwindow GLFWwindow;
 
 /*! @brief Opaque cursor object.
  *
  *  Opaque cursor object.
  *
  *  @see @ref cursor_object
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup cursor
  */
 typedef struct GLFWcursor GLFWcursor;
 
 /*! @brief The function signature for error callbacks.
  *
  *  This is the function signature for error callback functions.
  *
  *  @param[in] error An [error code](@ref errors).
  *  @param[in] description A UTF-8 encoded string describing the error.
  *
  *  @sa @ref error_handling
  *  @sa glfwSetErrorCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup init
  */
 typedef void (* GLFWerrorfun)(int,const char*);
 
 /*! @brief The function signature for window position callbacks.
  *
  *  This is the function signature for window position callback functions.
  *
  *  @param[in] window The window that was moved.
  *  @param[in] xpos The new x-coordinate, in screen coordinates, of the
  *  upper-left corner of the client area of the window.
  *  @param[in] ypos The new y-coordinate, in screen coordinates, of the
  *  upper-left corner of the client area of the window.
  *
  *  @sa @ref window_pos
  *  @sa glfwSetWindowPosCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 typedef void (* GLFWwindowposfun)(GLFWwindow*,int,int);
 
 /*! @brief The function signature for window resize callbacks.
  *
  *  This is the function signature for window size callback functions.
  *
  *  @param[in] window The window that was resized.
  *  @param[in] width The new width, in screen coordinates, of the window.
  *  @param[in] height The new height, in screen coordinates, of the window.
  *
  *  @sa @ref window_size
  *  @sa glfwSetWindowSizeCallback
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 typedef void (* GLFWwindowsizefun)(GLFWwindow*,int,int);
 
 /*! @brief The function signature for window close callbacks.
  *
  *  This is the function signature for window close callback functions.
  *
  *  @param[in] window The window that the user attempted to close.
  *
  *  @sa @ref window_close
  *  @sa glfwSetWindowCloseCallback
  *
  *  @since Added in version 2.5.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 typedef void (* GLFWwindowclosefun)(GLFWwindow*);
 
 /*! @brief The function signature for window content refresh callbacks.
  *
  *  This is the function signature for window refresh callback functions.
  *
  *  @param[in] window The window whose content needs to be refreshed.
  *
  *  @sa @ref window_refresh
  *  @sa glfwSetWindowRefreshCallback
  *
  *  @since Added in version 2.5.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 typedef void (* GLFWwindowrefreshfun)(GLFWwindow*);
 
 /*! @brief The function signature for window focus/defocus callbacks.
  *
  *  This is the function signature for window focus callback functions.
  *
  *  @param[in] window The window that gained or lost input focus.
  *  @param[in] focused `GLFW_TRUE` if the window was given input focus, or
  *  `GLFW_FALSE` if it lost it.
  *
  *  @sa @ref window_focus
  *  @sa glfwSetWindowFocusCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 typedef void (* GLFWwindowfocusfun)(GLFWwindow*,int);
 
 /*! @brief The function signature for window iconify/restore callbacks.
  *
  *  This is the function signature for window iconify/restore callback
  *  functions.
  *
  *  @param[in] window The window that was iconified or restored.
  *  @param[in] iconified `GLFW_TRUE` if the window was iconified, or
  *  `GLFW_FALSE` if it was restored.
  *
  *  @sa @ref window_iconify
  *  @sa glfwSetWindowIconifyCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 typedef void (* GLFWwindowiconifyfun)(GLFWwindow*,int);
 
 /*! @brief The function signature for framebuffer resize callbacks.
  *
  *  This is the function signature for framebuffer resize callback
  *  functions.
  *
  *  @param[in] window The window whose framebuffer was resized.
  *  @param[in] width The new width, in pixels, of the framebuffer.
  *  @param[in] height The new height, in pixels, of the framebuffer.
  *
  *  @sa @ref window_fbsize
  *  @sa glfwSetFramebufferSizeCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 typedef void (* GLFWframebuffersizefun)(GLFWwindow*,int,int);
 
 /*! @brief The function signature for mouse button callbacks.
  *
  *  This is the function signature for mouse button callback functions.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] button The [mouse button](@ref buttons) that was pressed or
  *  released.
  *  @param[in] action One of `GLFW_PRESS` or `GLFW_RELEASE`.
  *  @param[in] mods Bit field describing which [modifier keys](@ref mods) were
  *  held down.
  *
  *  @sa @ref input_mouse_button
  *  @sa glfwSetMouseButtonCallback
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle and modifier mask parameters.
  *
  *  @ingroup input
  */
 typedef void (* GLFWmousebuttonfun)(GLFWwindow*,int,int,int);
 
 /*! @brief The function signature for cursor position callbacks.
  *
  *  This is the function signature for cursor position callback functions.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] xpos The new cursor x-coordinate, relative to the left edge of
  *  the client area.
  *  @param[in] ypos The new cursor y-coordinate, relative to the top edge of the
  *  client area.
  *
  *  @sa @ref cursor_pos
  *  @sa glfwSetCursorPosCallback
  *
  *  @since Added in version 3.0.  Replaces `GLFWmouseposfun`.
  *
  *  @ingroup input
  */
 typedef void (* GLFWcursorposfun)(GLFWwindow*,double,double);
 
 /*! @brief The function signature for cursor enter/leave callbacks.
  *
  *  This is the function signature for cursor enter/leave callback functions.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] entered `GLFW_TRUE` if the cursor entered the window's client
  *  area, or `GLFW_FALSE` if it left it.
  *
  *  @sa @ref cursor_enter
  *  @sa glfwSetCursorEnterCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup input
  */
 typedef void (* GLFWcursorenterfun)(GLFWwindow*,int);
 
 /*! @brief The function signature for scroll callbacks.
  *
  *  This is the function signature for scroll callback functions.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] xoffset The scroll offset along the x-axis.
  *  @param[in] yoffset The scroll offset along the y-axis.
  *
  *  @sa @ref scrolling
  *  @sa glfwSetScrollCallback
  *
  *  @since Added in version 3.0.  Replaces `GLFWmousewheelfun`.
  *
  *  @ingroup input
  */
 typedef void (* GLFWscrollfun)(GLFWwindow*,double,double);
 
 /*! @brief The function signature for keyboard key callbacks.
  *
  *  This is the function signature for keyboard key callback functions.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] key The [keyboard key](@ref keys) that was pressed or released.
  *  @param[in] scancode The system-specific scancode of the key.
  *  @param[in] action `GLFW_PRESS`, `GLFW_RELEASE` or `GLFW_REPEAT`.
  *  @param[in] mods Bit field describing which [modifier keys](@ref mods) were
  *  held down.
  *
  *  @sa @ref input_key
  *  @sa glfwSetKeyCallback
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle, scancode and modifier mask parameters.
  *
  *  @ingroup input
  */
 typedef void (* GLFWkeyfun)(GLFWwindow*,int,int,int,int);
 
 /*! @brief The function signature for Unicode character callbacks.
  *
  *  This is the function signature for Unicode character callback functions.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] codepoint The Unicode code point of the character.
  *
  *  @sa @ref input_char
  *  @sa glfwSetCharCallback
  *
  *  @since Added in version 2.4.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup input
  */
 typedef void (* GLFWcharfun)(GLFWwindow*,unsigned int);
 
 /*! @brief The function signature for Unicode character with modifiers
  *  callbacks.
  *
  *  This is the function signature for Unicode character with modifiers callback
  *  functions.  It is called for each input character, regardless of what
  *  modifier keys are held down.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] codepoint The Unicode code point of the character.
  *  @param[in] mods Bit field describing which [modifier keys](@ref mods) were
  *  held down.
  *
  *  @sa @ref input_char
  *  @sa glfwSetCharModsCallback
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 typedef void (* GLFWcharmodsfun)(GLFWwindow*,unsigned int,int);
 
 /*! @brief The function signature for file drop callbacks.
  *
  *  This is the function signature for file drop callbacks.
  *
  *  @param[in] window The window that received the event.
  *  @param[in] count The number of dropped files.
  *  @param[in] paths The UTF-8 encoded file and/or directory path names.
  *
  *  @sa @ref path_drop
  *  @sa glfwSetDropCallback
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 typedef void (* GLFWdropfun)(GLFWwindow*,int,const char**);
 
 /*! @brief The function signature for monitor configuration callbacks.
  *
  *  This is the function signature for monitor configuration callback functions.
  *
  *  @param[in] monitor The monitor that was connected or disconnected.
  *  @param[in] event One of `GLFW_CONNECTED` or `GLFW_DISCONNECTED`.
  *
  *  @sa @ref monitor_event
  *  @sa glfwSetMonitorCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 typedef void (* GLFWmonitorfun)(GLFWmonitor*,int);
 
 /*! @brief The function signature for joystick configuration callbacks.
  *
  *  This is the function signature for joystick configuration callback
  *  functions.
  *
  *  @param[in] joy The joystick that was connected or disconnected.
  *  @param[in] event One of `GLFW_CONNECTED` or `GLFW_DISCONNECTED`.
  *
  *  @sa @ref joystick_event
  *  @sa glfwSetJoystickCallback
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup input
  */
 typedef void (* GLFWjoystickfun)(int,int);
 
 /*! @brief Video mode type.
  *
  *  This describes a single video mode.
  *
  *  @sa @ref monitor_modes
  *  @sa glfwGetVideoMode glfwGetVideoModes
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added refresh rate member.
  *
  *  @ingroup monitor
  */
 typedef struct GLFWvidmode
 {
     /*! The width, in screen coordinates, of the video mode.
      */
     int width;
     /*! The height, in screen coordinates, of the video mode.
      */
     int height;
     /*! The bit depth of the red channel of the video mode.
      */
     int redBits;
     /*! The bit depth of the green channel of the video mode.
      */
     int greenBits;
     /*! The bit depth of the blue channel of the video mode.
      */
     int blueBits;
     /*! The refresh rate, in Hz, of the video mode.
      */
     int refreshRate;
 } GLFWvidmode;
 
 /*! @brief Gamma ramp.
  *
  *  This describes the gamma ramp for a monitor.
  *
  *  @sa @ref monitor_gamma
  *  @sa glfwGetGammaRamp glfwSetGammaRamp
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 typedef struct GLFWgammaramp
 {
     /*! An array of value describing the response of the red channel.
      */
     unsigned short* red;
     /*! An array of value describing the response of the green channel.
      */
     unsigned short* green;
     /*! An array of value describing the response of the blue channel.
      */
     unsigned short* blue;
     /*! The number of elements in each array.
      */
     unsigned int size;
 } GLFWgammaramp;
 
 /*! @brief Image data.
  *
  *  @sa @ref cursor_custom
  *
  *  @since Added in version 2.1.
  *  @glfw3 Removed format and bytes-per-pixel members.
  */
 typedef struct GLFWimage
 {
     /*! The width, in pixels, of this image.
      */
     int width;
     /*! The height, in pixels, of this image.
      */
     int height;
     /*! The pixel data of this image, arranged left-to-right, top-to-bottom.
      */
     unsigned char* pixels;
 } GLFWimage;
 
 
 /*************************************************************************
  * GLFW API functions
  *************************************************************************/
 
 /*! @brief Initializes the GLFW library.
  *
  *  This function initializes the GLFW library.  Before most GLFW functions can
  *  be used, GLFW must be initialized, and before an application terminates GLFW
  *  should be terminated in order to free any resources allocated during or
  *  after initialization.
  *
  *  If this function fails, it calls @ref glfwTerminate before returning.  If it
  *  succeeds, you should call @ref glfwTerminate before the application exits.
  *
  *  Additional calls to this function after successful initialization but before
  *  termination will return `GLFW_TRUE` immediately.
  *
  *  @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark @osx This function will change the current directory of the
  *  application to the `Contents/Resources` subdirectory of the application's
  *  bundle, if present.  This can be disabled with a
  *  [compile-time option](@ref compile_options_osx).
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref intro_init
  *  @sa glfwTerminate
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup init
  */
 GLFWAPI int glfwInit(void);
 
 /*! @brief Terminates the GLFW library.
  *
  *  This function destroys all remaining windows and cursors, restores any
  *  modified gamma ramps and frees any other allocated resources.  Once this
  *  function is called, you must again call @ref glfwInit successfully before
  *  you will be able to use most GLFW functions.
  *
  *  If GLFW has been successfully initialized, this function should be called
  *  before the application exits.  If initialization fails, there is no need to
  *  call this function, as it is called by @ref glfwInit before it returns
  *  failure.
  *
  *  @errors Possible errors include @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark This function may be called before @ref glfwInit.
  *
  *  @warning The contexts of any remaining windows must not be current on any
  *  other thread when this function is called.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref intro_init
  *  @sa glfwInit
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup init
  */
 GLFWAPI void glfwTerminate(void);
 
 /*! @brief Retrieves the version of the GLFW library.
  *
  *  This function retrieves the major, minor and revision numbers of the GLFW
  *  library.  It is intended for when you are using GLFW as a shared library and
  *  want to ensure that you are using the minimum required version.
  *
  *  Any or all of the version arguments may be `NULL`.
  *
  *  @param[out] major Where to store the major version number, or `NULL`.
  *  @param[out] minor Where to store the minor version number, or `NULL`.
  *  @param[out] rev Where to store the revision number, or `NULL`.
  *
  *  @errors None.
  *
  *  @remark This function may be called before @ref glfwInit.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref intro_version
  *  @sa glfwGetVersionString
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup init
  */
 GLFWAPI void glfwGetVersion(int* major, int* minor, int* rev);
 
 /*! @brief Returns a string describing the compile-time configuration.
  *
  *  This function returns the compile-time generated
  *  [version string](@ref intro_version_string) of the GLFW library binary.  It
  *  describes the version, platform, compiler and any platform-specific
  *  compile-time options.  It should not be confused with the OpenGL or OpenGL
  *  ES version string, queried with `glGetString`.
  *
  *  __Do not use the version string__ to parse the GLFW library version.  The
  *  @ref glfwGetVersion function provides the version of the running library
  *  binary in numerical format.
  *
  *  @return The ASCII encoded GLFW version string.
  *
  *  @errors None.
  *
  *  @remark This function may be called before @ref glfwInit.
  *
  *  @pointer_lifetime The returned string is static and compile-time generated.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref intro_version
  *  @sa glfwGetVersion
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup init
  */
 GLFWAPI const char* glfwGetVersionString(void);
 
 /*! @brief Sets the error callback.
  *
  *  This function sets the error callback, which is called with an error code
  *  and a human-readable description each time a GLFW error occurs.
  *
  *  The error callback is called on the thread where the error occurred.  If you
  *  are using GLFW from multiple threads, your error callback needs to be
  *  written accordingly.
  *
  *  Because the description string may have been generated specifically for that
  *  error, it is not guaranteed to be valid after the callback has returned.  If
  *  you wish to use it after the callback returns, you need to make a copy.
  *
  *  Once set, the error callback remains set even after the library has been
  *  terminated.
  *
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set.
  *
  *  @errors None.
  *
  *  @remark This function may be called before @ref glfwInit.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref error_handling
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup init
  */
 GLFWAPI GLFWerrorfun glfwSetErrorCallback(GLFWerrorfun cbfun);
 
 /*! @brief Returns the currently connected monitors.
  *
  *  This function returns an array of handles for all currently connected
  *  monitors.  The primary monitor is always first in the returned array.  If no
  *  monitors were found, this function returns `NULL`.
  *
  *  @param[out] count Where to store the number of monitors in the returned
  *  array.  This is set to zero if an error occurred.
  *  @return An array of monitor handles, or `NULL` if no monitors were found or
  *  if an [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @pointer_lifetime The returned array is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is guaranteed to be valid only until the
  *  monitor configuration changes or the library is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_monitors
  *  @sa @ref monitor_event
  *  @sa glfwGetPrimaryMonitor
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI GLFWmonitor** glfwGetMonitors(int* count);
 
 /*! @brief Returns the primary monitor.
  *
  *  This function returns the primary monitor.  This is usually the monitor
  *  where elements like the task bar or global menu bar are located.
  *
  *  @return The primary monitor, or `NULL` if no monitors were found or if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @remark The primary monitor is always first in the array returned by @ref
  *  glfwGetMonitors.
  *
  *  @sa @ref monitor_monitors
  *  @sa glfwGetMonitors
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI GLFWmonitor* glfwGetPrimaryMonitor(void);
 
 /*! @brief Returns the position of the monitor's viewport on the virtual screen.
  *
  *  This function returns the position, in screen coordinates, of the upper-left
  *  corner of the specified monitor.
  *
  *  Any or all of the position arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` position arguments will be set to zero.
  *
  *  @param[in] monitor The monitor to query.
  *  @param[out] xpos Where to store the monitor x-coordinate, or `NULL`.
  *  @param[out] ypos Where to store the monitor y-coordinate, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_properties
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI void glfwGetMonitorPos(GLFWmonitor* monitor, int* xpos, int* ypos);
 
 /*! @brief Returns the physical size of the monitor.
  *
  *  This function returns the size, in millimetres, of the display area of the
  *  specified monitor.
  *
  *  Some systems do not provide accurate monitor size information, either
  *  because the monitor
  *  [EDID](https://en.wikipedia.org/wiki/Extended_display_identification_data)
  *  data is incorrect or because the driver does not report it accurately.
  *
  *  Any or all of the size arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` size arguments will be set to zero.
  *
  *  @param[in] monitor The monitor to query.
  *  @param[out] widthMM Where to store the width, in millimetres, of the
  *  monitor's display area, or `NULL`.
  *  @param[out] heightMM Where to store the height, in millimetres, of the
  *  monitor's display area, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @remark @win32 calculates the returned physical size from the
  *  current resolution and system DPI instead of querying the monitor EDID data.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_properties
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI void glfwGetMonitorPhysicalSize(GLFWmonitor* monitor, int* widthMM, int* heightMM);
 
 /*! @brief Returns the name of the specified monitor.
  *
  *  This function returns a human-readable name, encoded as UTF-8, of the
  *  specified monitor.  The name typically reflects the make and model of the
  *  monitor and is not guaranteed to be unique among the connected monitors.
  *
  *  @param[in] monitor The monitor to query.
  *  @return The UTF-8 encoded name of the monitor, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @pointer_lifetime The returned string is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the specified monitor is
  *  disconnected or the library is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_properties
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI const char* glfwGetMonitorName(GLFWmonitor* monitor);
 
 /*! @brief Sets the monitor configuration callback.
  *
  *  This function sets the monitor configuration callback, or removes the
  *  currently set callback.  This is called when a monitor is connected to or
  *  disconnected from the system.
  *
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_event
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI GLFWmonitorfun glfwSetMonitorCallback(GLFWmonitorfun cbfun);
 
 /*! @brief Returns the available video modes for the specified monitor.
  *
  *  This function returns an array of all video modes supported by the specified
  *  monitor.  The returned array is sorted in ascending order, first by color
  *  bit depth (the sum of all channel depths) and then by resolution area (the
  *  product of width and height).
  *
  *  @param[in] monitor The monitor to query.
  *  @param[out] count Where to store the number of video modes in the returned
  *  array.  This is set to zero if an error occurred.
  *  @return An array of video modes, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned array is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the specified monitor is
  *  disconnected, this function is called again for that monitor or the library
  *  is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_modes
  *  @sa glfwGetVideoMode
  *
  *  @since Added in version 1.0.
  *  @glfw3 Changed to return an array of modes for a specific monitor.
  *
  *  @ingroup monitor
  */
 GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* monitor, int* count);
 
 /*! @brief Returns the current mode of the specified monitor.
  *
  *  This function returns the current video mode of the specified monitor.  If
  *  you have created a full screen window for that monitor, the return value
  *  will depend on whether that window is iconified.
  *
  *  @param[in] monitor The monitor to query.
  *  @return The current mode of the monitor, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned array is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the specified monitor is
  *  disconnected or the library is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_modes
  *  @sa glfwGetVideoModes
  *
  *  @since Added in version 3.0.  Replaces `glfwGetDesktopMode`.
  *
  *  @ingroup monitor
  */
 GLFWAPI const GLFWvidmode* glfwGetVideoMode(GLFWmonitor* monitor);
 
 /*! @brief Generates a gamma ramp and sets it for the specified monitor.
  *
  *  This function generates a 256-element gamma ramp from the specified exponent
  *  and then calls @ref glfwSetGammaRamp with it.  The value must be a finite
  *  number greater than zero.
  *
  *  @param[in] monitor The monitor whose gamma ramp to set.
  *  @param[in] gamma The desired exponent.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_gamma
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI void glfwSetGamma(GLFWmonitor* monitor, float gamma);
 
 /*! @brief Returns the current gamma ramp for the specified monitor.
  *
  *  This function returns the current gamma ramp of the specified monitor.
  *
  *  @param[in] monitor The monitor to query.
  *  @return The current gamma ramp, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned structure and its arrays are allocated and
  *  freed by GLFW.  You should not free them yourself.  They are valid until the
  *  specified monitor is disconnected, this function is called again for that
  *  monitor or the library is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_gamma
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI const GLFWgammaramp* glfwGetGammaRamp(GLFWmonitor* monitor);
 
 /*! @brief Sets the current gamma ramp for the specified monitor.
  *
  *  This function sets the current gamma ramp for the specified monitor.  The
  *  original gamma ramp for that monitor is saved by GLFW the first time this
  *  function is called and is restored by @ref glfwTerminate.
  *
  *  @param[in] monitor The monitor whose gamma ramp to set.
  *  @param[in] ramp The gamma ramp to use.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @remark Gamma ramp sizes other than 256 are not supported by all platforms
  *  or graphics hardware.
  *
  *  @remark @win32 The gamma ramp size must be 256.
  *
  *  @pointer_lifetime The specified gamma ramp is copied before this function
  *  returns.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref monitor_gamma
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup monitor
  */
 GLFWAPI void glfwSetGammaRamp(GLFWmonitor* monitor, const GLFWgammaramp* ramp);
 
 /*! @brief Resets all window hints to their default values.
  *
  *  This function resets all window hints to their
  *  [default values](@ref window_hints_values).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_hints
  *  @sa glfwWindowHint
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwDefaultWindowHints(void);
 
 /*! @brief Sets the specified window hint to the desired value.
  *
  *  This function sets hints for the next call to @ref glfwCreateWindow.  The
  *  hints, once set, retain their values until changed by a call to @ref
  *  glfwWindowHint or @ref glfwDefaultWindowHints, or until the library is
  *  terminated.
  *
  *  This function does not check whether the specified hint values are valid.
  *  If you set hints to invalid values this will instead be reported by the next
  *  call to @ref glfwCreateWindow.
  *
  *  @param[in] hint The [window hint](@ref window_hints) to set.
  *  @param[in] value The new value of the window hint.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_INVALID_ENUM.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_hints
  *  @sa glfwDefaultWindowHints
  *
  *  @since Added in version 3.0.  Replaces `glfwOpenWindowHint`.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwWindowHint(int hint, int value);
 
 /*! @brief Creates a window and its associated context.
  *
  *  This function creates a window and its associated OpenGL or OpenGL ES
  *  context.  Most of the options controlling how the window and its context
  *  should be created are specified with [window hints](@ref window_hints).
  *
  *  Successful creation does not change which context is current.  Before you
  *  can use the newly created context, you need to
  *  [make it current](@ref context_current).  For information about the `share`
  *  parameter, see @ref context_sharing.
  *
  *  The created window, framebuffer and context may differ from what you
  *  requested, as not all parameters and hints are
  *  [hard constraints](@ref window_hints_hard).  This includes the size of the
  *  window, especially for full screen windows.  To query the actual attributes
  *  of the created window, framebuffer and context, see @ref
  *  glfwGetWindowAttrib, @ref glfwGetWindowSize and @ref glfwGetFramebufferSize.
  *
  *  To create a full screen window, you need to specify the monitor the window
  *  will cover.  If no monitor is specified, the window will be windowed mode.
  *  Unless you have a way for the user to choose a specific monitor, it is
  *  recommended that you pick the primary monitor.  For more information on how
  *  to query connected monitors, see @ref monitor_monitors.
  *
  *  For full screen windows, the specified size becomes the resolution of the
  *  window's _desired video mode_.  As long as a full screen window is not
  *  iconified, the supported video mode most closely matching the desired video
  *  mode is set for the specified monitor.  For more information about full
  *  screen windows, including the creation of so called _windowed full screen_
  *  or _borderless full screen_ windows, see @ref window_windowed_full_screen.
  *
  *  By default, newly created windows use the placement recommended by the
  *  window system.  To create the window at a specific position, make it
  *  initially invisible using the [GLFW_VISIBLE](@ref window_hints_wnd) window
  *  hint, set its [position](@ref window_pos) and then [show](@ref window_hide)
  *  it.
  *
  *  As long as at least one full screen window is not iconified, the screensaver
  *  is prohibited from starting.
  *
  *  Window systems put limits on window sizes.  Very large or very small window
  *  dimensions may be overridden by the window system on creation.  Check the
  *  actual [size](@ref window_size) after creation.
  *
  *  The [swap interval](@ref buffer_swap) is not set during window creation and
  *  the initial value may vary depending on driver settings and defaults.
  *
  *  @param[in] width The desired width, in screen coordinates, of the window.
  *  This must be greater than zero.
  *  @param[in] height The desired height, in screen coordinates, of the window.
  *  This must be greater than zero.
  *  @param[in] title The initial, UTF-8 encoded window title.
  *  @param[in] monitor The monitor to use for full screen mode, or `NULL` for
  *  windowed mode.
  *  @param[in] share The window whose context to share resources with, or `NULL`
  *  to not share resources.
  *  @return The handle of the created window, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM, @ref GLFW_INVALID_VALUE, @ref GLFW_API_UNAVAILABLE, @ref
  *  GLFW_VERSION_UNAVAILABLE, @ref GLFW_FORMAT_UNAVAILABLE and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @remark @win32 Window creation will fail if the Microsoft GDI software
  *  OpenGL implementation is the only one available.
  *
  *  @remark @win32 If the executable has an icon resource named `GLFW_ICON,`
  *  it will be set as the icon for the window.  If no such icon is present, the
  *  `IDI_WINLOGO` icon will be used instead.
  *
  *  @remark @win32 The context to share resources with must not be current on
  *  any other thread.
  *
  *  @remark @osx The GLFW window has no icon, as it is not a document
  *  window, but the dock icon will be the same as the application bundle's icon.
  *  For more information on bundles, see the
  *  [Bundle Programming Guide](https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFBundles/)
  *  in the Mac Developer Library.
  *
  *  @remark @osx The first time a window is created the menu bar is populated
  *  with common commands like Hide, Quit and About.  The About entry opens
  *  a minimal about dialog with information from the application's bundle.  The
  *  menu bar can be disabled with a
  *  [compile-time option](@ref compile_options_osx).
  *
  *  @remark @osx On OS X 10.10 and later the window frame will not be rendered
  *  at full resolution on Retina displays unless the `NSHighResolutionCapable`
  *  key is enabled in the application bundle's `Info.plist`.  For more
  *  information, see
  *  [High Resolution Guidelines for OS X](https://developer.apple.com/library/mac/documentation/GraphicsAnimation/Conceptual/HighResolutionOSX/Explained/Explained.html)
  *  in the Mac Developer Library.  The GLFW test and example programs use
  *  a custom `Info.plist` template for this, which can be found as
  *  `CMake/MacOSXBundleInfo.plist.in` in the source tree.
  *
  *  @remark @x11 There is no mechanism for setting the window icon yet.
  *
  *  @remark @x11 Some window managers will not respect the placement of
  *  initially hidden windows.
  *
  *  @remark @x11 Due to the asynchronous nature of X11, it may take a moment for
  *  a window to reach its requested state.  This means you may not be able to
  *  query the final size, position or other attributes directly after window
  *  creation.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_creation
  *  @sa glfwDestroyWindow
  *
  *  @since Added in version 3.0.  Replaces `glfwOpenWindow`.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height, const char* title, GLFWmonitor* monitor, GLFWwindow* share);
 
 /*! @brief Destroys the specified window and its context.
  *
  *  This function destroys the specified window and its context.  On calling
  *  this function, no further callbacks will be called for that window.
  *
  *  If the context of the specified window is current on the main thread, it is
  *  detached before being destroyed.
  *
  *  @param[in] window The window to destroy.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @note The context of the specified window must not be current on any other
  *  thread when this function is called.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_creation
  *  @sa glfwCreateWindow
  *
  *  @since Added in version 3.0.  Replaces `glfwCloseWindow`.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwDestroyWindow(GLFWwindow* window);
 
 /*! @brief Checks the close flag of the specified window.
  *
  *  This function returns the value of the close flag of the specified window.
  *
  *  @param[in] window The window to query.
  *  @return The value of the close flag.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.  Access is not
  *  synchronized.
  *
  *  @sa @ref window_close
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI int glfwWindowShouldClose(GLFWwindow* window);
 
 /*! @brief Sets the close flag of the specified window.
  *
  *  This function sets the value of the close flag of the specified window.
  *  This can be used to override the user's attempt to close the window, or
  *  to signal that it should be closed.
  *
  *  @param[in] window The window whose flag to change.
  *  @param[in] value The new value.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.  Access is not
  *  synchronized.
  *
  *  @sa @ref window_close
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowShouldClose(GLFWwindow* window, int value);
 
 /*! @brief Sets the title of the specified window.
  *
  *  This function sets the window title, encoded as UTF-8, of the specified
  *  window.
  *
  *  @param[in] window The window whose title to change.
  *  @param[in] title The UTF-8 encoded window title.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @remark @osx The window title will not be updated until the next time you
  *  process events.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_title
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowTitle(GLFWwindow* window, const char* title);
 
 /*! @brief Sets the icon for the specified window.
  *
  *  This function sets the icon of the specified window.  If passed an array of
  *  candidate images, those of or closest to the sizes desired by the system are
  *  selected.  If no images are specified, the window reverts to its default
  *  icon.
  *
  *  The desired image sizes varies depending on platform and system settings.
  *  The selected images will be rescaled as needed.  Good sizes include 16x16,
  *  32x32 and 48x48.
  *
  *  @param[in] window The window whose icon to set.
  *  @param[in] count The number of images in the specified array, or zero to
  *  revert to the default window icon.
  *  @param[in] images The images to create the icon from.  This is ignored if
  *  count is zero.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The specified image data is copied before this function
  *  returns.
  *
  *  @remark @osx The GLFW window has no icon, as it is not a document
  *  window, but the dock icon will be the same as the application bundle's icon.
  *  For more information on bundles, see the
  *  [Bundle Programming Guide](https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFBundles/)
  *  in the Mac Developer Library.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_icon
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowIcon(GLFWwindow* window, int count, const GLFWimage* images);
 
 /*! @brief Retrieves the position of the client area of the specified window.
  *
  *  This function retrieves the position, in screen coordinates, of the
  *  upper-left corner of the client area of the specified window.
  *
  *  Any or all of the position arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` position arguments will be set to zero.
  *
  *  @param[in] window The window to query.
  *  @param[out] xpos Where to store the x-coordinate of the upper-left corner of
  *  the client area, or `NULL`.
  *  @param[out] ypos Where to store the y-coordinate of the upper-left corner of
  *  the client area, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_pos
  *  @sa glfwSetWindowPos
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwGetWindowPos(GLFWwindow* window, int* xpos, int* ypos);
 
 /*! @brief Sets the position of the client area of the specified window.
  *
  *  This function sets the position, in screen coordinates, of the upper-left
  *  corner of the client area of the specified windowed mode window.  If the
  *  window is a full screen window, this function does nothing.
  *
  *  __Do not use this function__ to move an already visible window unless you
  *  have very good reasons for doing so, as it will confuse and annoy the user.
  *
  *  The window manager may put limits on what positions are allowed.  GLFW
  *  cannot and should not override these limits.
  *
  *  @param[in] window The window to query.
  *  @param[in] xpos The x-coordinate of the upper-left corner of the client area.
  *  @param[in] ypos The y-coordinate of the upper-left corner of the client area.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_pos
  *  @sa glfwGetWindowPos
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowPos(GLFWwindow* window, int xpos, int ypos);
 
 /*! @brief Retrieves the size of the client area of the specified window.
  *
  *  This function retrieves the size, in screen coordinates, of the client area
  *  of the specified window.  If you wish to retrieve the size of the
  *  framebuffer of the window in pixels, see @ref glfwGetFramebufferSize.
  *
  *  Any or all of the size arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` size arguments will be set to zero.
  *
  *  @param[in] window The window whose size to retrieve.
  *  @param[out] width Where to store the width, in screen coordinates, of the
  *  client area, or `NULL`.
  *  @param[out] height Where to store the height, in screen coordinates, of the
  *  client area, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_size
  *  @sa glfwSetWindowSize
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwGetWindowSize(GLFWwindow* window, int* width, int* height);
 
 /*! @brief Sets the size limits of the specified window.
  *
  *  This function sets the size limits of the client area of the specified
  *  window.  If the window is full screen, the size limits only take effect if
  *  once it is made windowed.  If the window is not resizable, this function
  *  does nothing.
  *
  *  The size limits are applied immediately to a windowed mode window and may
  *  cause it to be resized.
  *
  *  @param[in] window The window to set limits for.
  *  @param[in] minwidth The minimum width, in screen coordinates, of the client
  *  area, or `GLFW_DONT_CARE`.
  *  @param[in] minheight The minimum height, in screen coordinates, of the
  *  client area, or `GLFW_DONT_CARE`.
  *  @param[in] maxwidth The maximum width, in screen coordinates, of the client
  *  area, or `GLFW_DONT_CARE`.
  *  @param[in] maxheight The maximum height, in screen coordinates, of the
  *  client area, or `GLFW_DONT_CARE`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @remark If you set size limits and an aspect ratio that conflict, the
  *  results are undefined.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_sizelimits
  *  @sa glfwSetWindowAspectRatio
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowSizeLimits(GLFWwindow* window, int minwidth, int minheight, int maxwidth, int maxheight);
 
 /*! @brief Sets the aspect ratio of the specified window.
  *
  *  This function sets the required aspect ratio of the client area of the
  *  specified window.  If the window is full screen, the aspect ratio only takes
  *  effect once it is made windowed.  If the window is not resizable, this
  *  function does nothing.
  *
  *  The aspect ratio is specified as a numerator and a denominator and both
  *  values must be greater than zero.  For example, the common 16:9 aspect ratio
  *  is specified as 16 and 9, respectively.
  *
  *  If the numerator and denominator is set to `GLFW_DONT_CARE` then the aspect
  *  ratio limit is disabled.
  *
  *  The aspect ratio is applied immediately to a windowed mode window and may
  *  cause it to be resized.
  *
  *  @param[in] window The window to set limits for.
  *  @param[in] numer The numerator of the desired aspect ratio, or
  *  `GLFW_DONT_CARE`.
  *  @param[in] denom The denominator of the desired aspect ratio, or
  *  `GLFW_DONT_CARE`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark If you set size limits and an aspect ratio that conflict, the
  *  results are undefined.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_sizelimits
  *  @sa glfwSetWindowSizeLimits
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowAspectRatio(GLFWwindow* window, int numer, int denom);
 
 /*! @brief Sets the size of the client area of the specified window.
  *
  *  This function sets the size, in screen coordinates, of the client area of
  *  the specified window.
  *
  *  For full screen windows, this function updates the resolution of its desired
  *  video mode and switches to the video mode closest to it, without affecting
  *  the window's context.  As the context is unaffected, the bit depths of the
  *  framebuffer remain unchanged.
  *
  *  If you wish to update the refresh rate of the desired video mode in addition
  *  to its resolution, see @ref glfwSetWindowMonitor.
  *
  *  The window manager may put limits on what sizes are allowed.  GLFW cannot
  *  and should not override these limits.
  *
  *  @param[in] window The window to resize.
  *  @param[in] width The desired width, in screen coordinates, of the window
  *  client area.
  *  @param[in] height The desired height, in screen coordinates, of the window
  *  client area.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_size
  *  @sa glfwGetWindowSize
  *  @sa glfwSetWindowMonitor
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowSize(GLFWwindow* window, int width, int height);
 
 /*! @brief Retrieves the size of the framebuffer of the specified window.
  *
  *  This function retrieves the size, in pixels, of the framebuffer of the
  *  specified window.  If you wish to retrieve the size of the window in screen
  *  coordinates, see @ref glfwGetWindowSize.
  *
  *  Any or all of the size arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` size arguments will be set to zero.
  *
  *  @param[in] window The window whose framebuffer to query.
  *  @param[out] width Where to store the width, in pixels, of the framebuffer,
  *  or `NULL`.
  *  @param[out] height Where to store the height, in pixels, of the framebuffer,
  *  or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_fbsize
  *  @sa glfwSetFramebufferSizeCallback
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwGetFramebufferSize(GLFWwindow* window, int* width, int* height);
 
 /*! @brief Retrieves the size of the frame of the window.
  *
  *  This function retrieves the size, in screen coordinates, of each edge of the
  *  frame of the specified window.  This size includes the title bar, if the
  *  window has one.  The size of the frame may vary depending on the
  *  [window-related hints](@ref window_hints_wnd) used to create it.
  *
  *  Because this function retrieves the size of each window frame edge and not
  *  the offset along a particular coordinate axis, the retrieved values will
  *  always be zero or positive.
  *
  *  Any or all of the size arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` size arguments will be set to zero.
  *
  *  @param[in] window The window whose frame size to query.
  *  @param[out] left Where to store the size, in screen coordinates, of the left
  *  edge of the window frame, or `NULL`.
  *  @param[out] top Where to store the size, in screen coordinates, of the top
  *  edge of the window frame, or `NULL`.
  *  @param[out] right Where to store the size, in screen coordinates, of the
  *  right edge of the window frame, or `NULL`.
  *  @param[out] bottom Where to store the size, in screen coordinates, of the
  *  bottom edge of the window frame, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_size
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwGetWindowFrameSize(GLFWwindow* window, int* left, int* top, int* right, int* bottom);
 
 /*! @brief Iconifies the specified window.
  *
  *  This function iconifies (minimizes) the specified window if it was
  *  previously restored.  If the window is already iconified, this function does
  *  nothing.
  *
  *  If the specified window is a full screen window, the original monitor
  *  resolution is restored until the window is restored.
  *
  *  @param[in] window The window to iconify.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_iconify
  *  @sa glfwRestoreWindow
  *  @sa glfwMaximizeWindow
  *
  *  @since Added in version 2.1.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwIconifyWindow(GLFWwindow* window);
 
 /*! @brief Restores the specified window.
  *
  *  This function restores the specified window if it was previously iconified
  *  (minimized) or maximized.  If the window is already restored, this function
  *  does nothing.
  *
  *  If the specified window is a full screen window, the resolution chosen for
  *  the window is restored on the selected monitor.
  *
  *  @param[in] window The window to restore.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_iconify
  *  @sa glfwIconifyWindow
  *  @sa glfwMaximizeWindow
  *
  *  @since Added in version 2.1.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwRestoreWindow(GLFWwindow* window);
 
 /*! @brief Maximizes the specified window.
  *
  *  This function maximizes the specified window if it was previously not
  *  maximized.  If the window is already maximized, this function does nothing.
  *
  *  If the specified window is a full screen window, this function does nothing.
  *
  *  @param[in] window The window to maximize.
  *
  *  @par Thread Safety
  *  This function may only be called from the main thread.
  *
  *  @sa @ref window_iconify
  *  @sa glfwIconifyWindow
  *  @sa glfwRestoreWindow
  *
  *  @since Added in GLFW 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwMaximizeWindow(GLFWwindow* window);
 
 /*! @brief Makes the specified window visible.
  *
  *  This function makes the specified window visible if it was previously
  *  hidden.  If the window is already visible or is in full screen mode, this
  *  function does nothing.
  *
  *  @param[in] window The window to make visible.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_hide
  *  @sa glfwHideWindow
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwShowWindow(GLFWwindow* window);
 
 /*! @brief Hides the specified window.
  *
  *  This function hides the specified window if it was previously visible.  If
  *  the window is already hidden or is in full screen mode, this function does
  *  nothing.
  *
  *  @param[in] window The window to hide.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_hide
  *  @sa glfwShowWindow
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwHideWindow(GLFWwindow* window);
 
 /*! @brief Brings the specified window to front and sets input focus.
  *
  *  This function brings the specified window to front and sets input focus.
  *  The window should already be visible and not iconified.
  *
  *  By default, both windowed and full screen mode windows are focused when
  *  initially created.  Set the [GLFW_FOCUSED](@ref window_hints_wnd) to disable
  *  this behavior.
  *
  *  __Do not use this function__ to steal focus from other applications unless
  *  you are certain that is what the user wants.  Focus stealing can be
  *  extremely disruptive.
  *
  *  @param[in] window The window to give input focus.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_focus
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwFocusWindow(GLFWwindow* window);
 
 /*! @brief Returns the monitor that the window uses for full screen mode.
  *
  *  This function returns the handle of the monitor that the specified window is
  *  in full screen on.
  *
  *  @param[in] window The window to query.
  *  @return The monitor, or `NULL` if the window is in windowed mode or an error
  *  occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_monitor
  *  @sa glfwSetWindowMonitor
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWmonitor* glfwGetWindowMonitor(GLFWwindow* window);
 
 /*! @brief Sets the mode, monitor, video mode and placement of a window.
  *
  *  This function sets the monitor that the window uses for full screen mode or,
  *  if the monitor is `NULL`, makes it windowed mode.
  *
  *  When setting a monitor, this function updates the width, height and refresh
  *  rate of the desired video mode and switches to the video mode closest to it.
  *  The window position is ignored when setting a monitor.
  *
  *  When the monitor is `NULL`, the position, width and height are used to
  *  place the window client area.  The refresh rate is ignored when no monitor
  *  is specified.
  *
  *  If you only wish to update the resolution of a full screen window or the
  *  size of a windowed mode window, see @ref glfwSetWindowSize.
  *
  *  When a window transitions from full screen to windowed mode, this function
  *  restores any previous window settings such as whether it is decorated,
  *  floating, resizable, has size or aspect ratio limits, etc..
  *
  *  @param[in] window The window whose monitor, size or video mode to set.
  *  @param[in] monitor The desired monitor, or `NULL` to set windowed mode.
  *  @param[in] xpos The desired x-coordinate of the upper-left corner of the
  *  client area.
  *  @param[in] ypos The desired y-coordinate of the upper-left corner of the
  *  client area.
  *  @param[in] width The desired with, in screen coordinates, of the client area
  *  or video mode.
  *  @param[in] height The desired height, in screen coordinates, of the client
  *  area or video mode.
  *  @param[in] refreshRate The desired refresh rate, in Hz, of the video mode.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_monitor
  *  @sa @ref window_full_screen
  *  @sa glfwGetWindowMonitor
  *  @sa glfwSetWindowSize
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowMonitor(GLFWwindow* window, GLFWmonitor* monitor, int xpos, int ypos, int width, int height, int refreshRate);
 
 /*! @brief Returns an attribute of the specified window.
  *
  *  This function returns the value of an attribute of the specified window or
  *  its OpenGL or OpenGL ES context.
  *
  *  @param[in] window The window to query.
  *  @param[in] attrib The [window attribute](@ref window_attribs) whose value to
  *  return.
  *  @return The value of the attribute, or zero if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark Framebuffer related hints are not window attributes.  See @ref
  *  window_attribs_fb for more information.
  *
  *  @remark Zero is a valid value for many window and context related
  *  attributes so you cannot use a return value of zero as an indication of
  *  errors.  However, this function should not fail as long as it is passed
  *  valid arguments and the library has been [initialized](@ref intro_init).
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_attribs
  *
  *  @since Added in version 3.0.  Replaces `glfwGetWindowParam` and
  *  `glfwGetGLVersion`.
  *
  *  @ingroup window
  */
 GLFWAPI int glfwGetWindowAttrib(GLFWwindow* window, int attrib);
 
 /*! @brief Sets the user pointer of the specified window.
  *
  *  This function sets the user-defined pointer of the specified window.  The
  *  current value is retained until the window is destroyed.  The initial value
  *  is `NULL`.
  *
  *  @param[in] window The window whose pointer to set.
  *  @param[in] pointer The new value.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.  Access is not
  *  synchronized.
  *
  *  @sa @ref window_userptr
  *  @sa glfwGetWindowUserPointer
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSetWindowUserPointer(GLFWwindow* window, void* pointer);
 
 /*! @brief Returns the user pointer of the specified window.
  *
  *  This function returns the current value of the user-defined pointer of the
  *  specified window.  The initial value is `NULL`.
  *
  *  @param[in] window The window whose pointer to return.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.  Access is not
  *  synchronized.
  *
  *  @sa @ref window_userptr
  *  @sa glfwSetWindowUserPointer
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI void* glfwGetWindowUserPointer(GLFWwindow* window);
 
 /*! @brief Sets the position callback for the specified window.
  *
  *  This function sets the position callback of the specified window, which is
  *  called when the window is moved.  The callback is provided with the screen
  *  position of the upper-left corner of the client area of the window.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_pos
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindowposfun glfwSetWindowPosCallback(GLFWwindow* window, GLFWwindowposfun cbfun);
 
 /*! @brief Sets the size callback for the specified window.
  *
  *  This function sets the size callback of the specified window, which is
  *  called when the window is resized.  The callback is provided with the size,
  *  in screen coordinates, of the client area of the window.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_size
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter and return value.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindowsizefun glfwSetWindowSizeCallback(GLFWwindow* window, GLFWwindowsizefun cbfun);
 
 /*! @brief Sets the close callback for the specified window.
  *
  *  This function sets the close callback of the specified window, which is
  *  called when the user attempts to close the window, for example by clicking
  *  the close widget in the title bar.
  *
  *  The close flag is set before this callback is called, but you can modify it
  *  at any time with @ref glfwSetWindowShouldClose.
  *
  *  The close callback is not triggered by @ref glfwDestroyWindow.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @remark @osx Selecting Quit from the application menu will trigger the close
  *  callback for all windows.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_close
  *
  *  @since Added in version 2.5.
  *  @glfw3 Added window handle parameter and return value.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindowclosefun glfwSetWindowCloseCallback(GLFWwindow* window, GLFWwindowclosefun cbfun);
 
 /*! @brief Sets the refresh callback for the specified window.
  *
  *  This function sets the refresh callback of the specified window, which is
  *  called when the client area of the window needs to be redrawn, for example
  *  if the window has been exposed after having been covered by another window.
  *
  *  On compositing window systems such as Aero, Compiz or Aqua, where the window
  *  contents are saved off-screen, this callback may be called only very
  *  infrequently or never at all.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_refresh
  *
  *  @since Added in version 2.5.
  *  @glfw3 Added window handle parameter and return value.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindowrefreshfun glfwSetWindowRefreshCallback(GLFWwindow* window, GLFWwindowrefreshfun cbfun);
 
 /*! @brief Sets the focus callback for the specified window.
  *
  *  This function sets the focus callback of the specified window, which is
  *  called when the window gains or loses input focus.
  *
  *  After the focus callback is called for a window that lost input focus,
  *  synthetic key and mouse button release events will be generated for all such
  *  that had been pressed.  For more information, see @ref glfwSetKeyCallback
  *  and @ref glfwSetMouseButtonCallback.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_focus
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindowfocusfun glfwSetWindowFocusCallback(GLFWwindow* window, GLFWwindowfocusfun cbfun);
 
 /*! @brief Sets the iconify callback for the specified window.
  *
  *  This function sets the iconification callback of the specified window, which
  *  is called when the window is iconified or restored.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_iconify
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWwindowiconifyfun glfwSetWindowIconifyCallback(GLFWwindow* window, GLFWwindowiconifyfun cbfun);
 
 /*! @brief Sets the framebuffer resize callback for the specified window.
  *
  *  This function sets the framebuffer resize callback of the specified window,
  *  which is called when the framebuffer of the specified window is resized.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_fbsize
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup window
  */
 GLFWAPI GLFWframebuffersizefun glfwSetFramebufferSizeCallback(GLFWwindow* window, GLFWframebuffersizefun cbfun);
 
 /*! @brief Processes all pending events.
  *
  *  This function processes only those events that are already in the event
  *  queue and then returns immediately.  Processing events will cause the window
  *  and input callbacks associated with those events to be called.
  *
  *  On some platforms, a window move, resize or menu operation will cause event
  *  processing to block.  This is due to how event processing is designed on
  *  those platforms.  You can use the
  *  [window refresh callback](@ref window_refresh) to redraw the contents of
  *  your window when necessary during such operations.
  *
  *  On some platforms, certain events are sent directly to the application
  *  without going through the event queue, causing callbacks to be called
  *  outside of a call to one of the event processing functions.
  *
  *  Event processing is not required for joystick input to work.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref events
  *  @sa glfwWaitEvents
  *  @sa glfwWaitEventsTimeout
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwPollEvents(void);
 
 /*! @brief Waits until events are queued and processes them.
  *
  *  This function puts the calling thread to sleep until at least one event is
  *  available in the event queue.  Once one or more events are available,
  *  it behaves exactly like @ref glfwPollEvents, i.e. the events in the queue
  *  are processed and the function then returns immediately.  Processing events
  *  will cause the window and input callbacks associated with those events to be
  *  called.
  *
  *  Since not all events are associated with callbacks, this function may return
  *  without a callback having been called even if you are monitoring all
  *  callbacks.
  *
  *  On some platforms, a window move, resize or menu operation will cause event
  *  processing to block.  This is due to how event processing is designed on
  *  those platforms.  You can use the
  *  [window refresh callback](@ref window_refresh) to redraw the contents of
  *  your window when necessary during such operations.
  *
  *  On some platforms, certain callbacks may be called outside of a call to one
  *  of the event processing functions.
  *
  *  If no windows exist, this function returns immediately.  For synchronization
  *  of threads in applications that do not create windows, use your threading
  *  library of choice.
  *
  *  Event processing is not required for joystick input to work.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref events
  *  @sa glfwPollEvents
  *  @sa glfwWaitEventsTimeout
  *
  *  @since Added in version 2.5.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwWaitEvents(void);
 
 /*! @brief Waits with timeout until events are queued and processes them.
  *
  *  This function puts the calling thread to sleep until at least one event is
  *  available in the event queue, or until the specified timeout is reached.  If
  *  one or more events are available, it behaves exactly like @ref
  *  glfwPollEvents, i.e. the events in the queue are processed and the function
  *  then returns immediately.  Processing events will cause the window and input
  *  callbacks associated with those events to be called.
  *
  *  The timeout value must be a positive finite number.
  *
  *  Since not all events are associated with callbacks, this function may return
  *  without a callback having been called even if you are monitoring all
  *  callbacks.
  *
  *  On some platforms, a window move, resize or menu operation will cause event
  *  processing to block.  This is due to how event processing is designed on
  *  those platforms.  You can use the
  *  [window refresh callback](@ref window_refresh) to redraw the contents of
  *  your window when necessary during such operations.
  *
  *  On some platforms, certain callbacks may be called outside of a call to one
  *  of the event processing functions.
  *
  *  If no windows exist, this function returns immediately.  For synchronization
  *  of threads in applications that do not create windows, use your threading
  *  library of choice.
  *
  *  Event processing is not required for joystick input to work.
  *
  *  @param[in] timeout The maximum amount of time, in seconds, to wait.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref events
  *  @sa glfwPollEvents
  *  @sa glfwWaitEvents
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwWaitEventsTimeout(double timeout);
 
 /*! @brief Posts an empty event to the event queue.
  *
  *  This function posts an empty event from the current thread to the event
  *  queue, causing @ref glfwWaitEvents to return.
  *
  *  If no windows exist, this function returns immediately.  For synchronization
  *  of threads in applications that do not create windows, use your threading
  *  library of choice.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref events
  *  @sa glfwWaitEvents
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwPostEmptyEvent(void);
 
 /*! @brief Returns the value of an input option for the specified window.
  *
  *  This function returns the value of an input option for the specified window.
  *  The mode must be one of `GLFW_CURSOR`, `GLFW_STICKY_KEYS` or
  *  `GLFW_STICKY_MOUSE_BUTTONS`.
  *
  *  @param[in] window The window to query.
  *  @param[in] mode One of `GLFW_CURSOR`, `GLFW_STICKY_KEYS` or
  *  `GLFW_STICKY_MOUSE_BUTTONS`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_INVALID_ENUM.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa glfwSetInputMode
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup input
  */
 GLFWAPI int glfwGetInputMode(GLFWwindow* window, int mode);
 
 /*! @brief Sets an input option for the specified window.
  *
  *  This function sets an input mode option for the specified window.  The mode
  *  must be one of `GLFW_CURSOR`, `GLFW_STICKY_KEYS` or
  *  `GLFW_STICKY_MOUSE_BUTTONS`.
  *
  *  If the mode is `GLFW_CURSOR`, the value must be one of the following cursor
  *  modes:
  *  - `GLFW_CURSOR_NORMAL` makes the cursor visible and behaving normally.
  *  - `GLFW_CURSOR_HIDDEN` makes the cursor invisible when it is over the client
  *    area of the window but does not restrict the cursor from leaving.
  *  - `GLFW_CURSOR_DISABLED` hides and grabs the cursor, providing virtual
  *    and unlimited cursor movement.  This is useful for implementing for
  *    example 3D camera controls.
  *
  *  If the mode is `GLFW_STICKY_KEYS`, the value must be either `GLFW_TRUE` to
  *  enable sticky keys, or `GLFW_FALSE` to disable it.  If sticky keys are
  *  enabled, a key press will ensure that @ref glfwGetKey returns `GLFW_PRESS`
  *  the next time it is called even if the key had been released before the
  *  call.  This is useful when you are only interested in whether keys have been
  *  pressed but not when or in which order.
  *
  *  If the mode is `GLFW_STICKY_MOUSE_BUTTONS`, the value must be either
  *  `GLFW_TRUE` to enable sticky mouse buttons, or `GLFW_FALSE` to disable it.
  *  If sticky mouse buttons are enabled, a mouse button press will ensure that
  *  @ref glfwGetMouseButton returns `GLFW_PRESS` the next time it is called even
  *  if the mouse button had been released before the call.  This is useful when
  *  you are only interested in whether mouse buttons have been pressed but not
  *  when or in which order.
  *
  *  @param[in] window The window whose input mode to set.
  *  @param[in] mode One of `GLFW_CURSOR`, `GLFW_STICKY_KEYS` or
  *  `GLFW_STICKY_MOUSE_BUTTONS`.
  *  @param[in] value The new value of the specified input mode.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa glfwGetInputMode
  *
  *  @since Added in version 3.0.  Replaces `glfwEnable` and `glfwDisable`.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwSetInputMode(GLFWwindow* window, int mode, int value);
 
 /*! @brief Returns the localized name of the specified printable key.
  *
  *  This function returns the localized name of the specified printable key.
  *  This is intended for displaying key bindings to the user.
  *
  *  If the key is `GLFW_KEY_UNKNOWN`, the scancode is used instead, otherwise
  *  the scancode is ignored.  If a non-printable key or (if the key is
  *  `GLFW_KEY_UNKNOWN`) a scancode that maps to a non-printable key is
  *  specified, this function returns `NULL`.          
  *
  *  This behavior allows you to pass in the arguments passed to the
  *  [key callback](@ref input_key) without modification.
  *
  *  The printable keys are:
  *  - `GLFW_KEY_APOSTROPHE`
  *  - `GLFW_KEY_COMMA`
  *  - `GLFW_KEY_MINUS`
  *  - `GLFW_KEY_PERIOD`
  *  - `GLFW_KEY_SLASH`
  *  - `GLFW_KEY_SEMICOLON`
  *  - `GLFW_KEY_EQUAL`
  *  - `GLFW_KEY_LEFT_BRACKET`
  *  - `GLFW_KEY_RIGHT_BRACKET`
  *  - `GLFW_KEY_BACKSLASH`
  *  - `GLFW_KEY_WORLD_1`
  *  - `GLFW_KEY_WORLD_2`
  *  - `GLFW_KEY_0` to `GLFW_KEY_9`
  *  - `GLFW_KEY_A` to `GLFW_KEY_Z`
  *  - `GLFW_KEY_KP_0` to `GLFW_KEY_KP_9`
  *  - `GLFW_KEY_KP_DECIMAL`
  *  - `GLFW_KEY_KP_DIVIDE`
  *  - `GLFW_KEY_KP_MULTIPLY`
  *  - `GLFW_KEY_KP_SUBTRACT`
  *  - `GLFW_KEY_KP_ADD`
  *  - `GLFW_KEY_KP_EQUAL`
  *
  *  @param[in] key The key to query, or `GLFW_KEY_UNKNOWN`.
  *  @param[in] scancode The scancode of the key to query.
  *  @return The localized name of the key, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned string is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the next call to @ref
  *  glfwGetKeyName, or until the library is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_key_name
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup input
  */
 GLFWAPI const char* glfwGetKeyName(int key, int scancode);
 
 /*! @brief Returns the last reported state of a keyboard key for the specified
  *  window.
  *
  *  This function returns the last state reported for the specified key to the
  *  specified window.  The returned state is one of `GLFW_PRESS` or
  *  `GLFW_RELEASE`.  The higher-level action `GLFW_REPEAT` is only reported to
  *  the key callback.
  *
  *  If the `GLFW_STICKY_KEYS` input mode is enabled, this function returns
  *  `GLFW_PRESS` the first time you call it for a key that was pressed, even if
  *  that key has already been released.
  *
  *  The key functions deal with physical keys, with [key tokens](@ref keys)
  *  named after their use on the standard US keyboard layout.  If you want to
  *  input text, use the Unicode character callback instead.
  *
  *  The [modifier key bit masks](@ref mods) are not key tokens and cannot be
  *  used with this function.
  *
  *  __Do not use this function__ to implement [text input](@ref input_char).
  *
  *  @param[in] window The desired window.
  *  @param[in] key The desired [keyboard key](@ref keys).  `GLFW_KEY_UNKNOWN` is
  *  not a valid key for this function.
  *  @return One of `GLFW_PRESS` or `GLFW_RELEASE`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_INVALID_ENUM.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_key
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup input
  */
 GLFWAPI int glfwGetKey(GLFWwindow* window, int key);
 
 /*! @brief Returns the last reported state of a mouse button for the specified
  *  window.
  *
  *  This function returns the last state reported for the specified mouse button
  *  to the specified window.  The returned state is one of `GLFW_PRESS` or
  *  `GLFW_RELEASE`.
  *
  *  If the `GLFW_STICKY_MOUSE_BUTTONS` input mode is enabled, this function
  *  `GLFW_PRESS` the first time you call it for a mouse button that was pressed,
  *  even if that mouse button has already been released.
  *
  *  @param[in] window The desired window.
  *  @param[in] button The desired [mouse button](@ref buttons).
  *  @return One of `GLFW_PRESS` or `GLFW_RELEASE`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_INVALID_ENUM.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_mouse_button
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup input
  */
 GLFWAPI int glfwGetMouseButton(GLFWwindow* window, int button);
 
 /*! @brief Retrieves the position of the cursor relative to the client area of
  *  the window.
  *
  *  This function returns the position of the cursor, in screen coordinates,
  *  relative to the upper-left corner of the client area of the specified
  *  window.
  *
  *  If the cursor is disabled (with `GLFW_CURSOR_DISABLED`) then the cursor
  *  position is unbounded and limited only by the minimum and maximum values of
  *  a `double`.
  *
  *  The coordinate can be converted to their integer equivalents with the
  *  `floor` function.  Casting directly to an integer type works for positive
  *  coordinates, but fails for negative ones.
  *
  *  Any or all of the position arguments may be `NULL`.  If an error occurs, all
  *  non-`NULL` position arguments will be set to zero.
  *
  *  @param[in] window The desired window.
  *  @param[out] xpos Where to store the cursor x-coordinate, relative to the
  *  left edge of the client area, or `NULL`.
  *  @param[out] ypos Where to store the cursor y-coordinate, relative to the to
  *  top edge of the client area, or `NULL`.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_pos
  *  @sa glfwSetCursorPos
  *
  *  @since Added in version 3.0.  Replaces `glfwGetMousePos`.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwGetCursorPos(GLFWwindow* window, double* xpos, double* ypos);
 
 /*! @brief Sets the position of the cursor, relative to the client area of the
  *  window.
  *
  *  This function sets the position, in screen coordinates, of the cursor
  *  relative to the upper-left corner of the client area of the specified
  *  window.  The window must have input focus.  If the window does not have
  *  input focus when this function is called, it fails silently.
  *
  *  __Do not use this function__ to implement things like camera controls.  GLFW
  *  already provides the `GLFW_CURSOR_DISABLED` cursor mode that hides the
  *  cursor, transparently re-centers it and provides unconstrained cursor
  *  motion.  See @ref glfwSetInputMode for more information.
  *
  *  If the cursor mode is `GLFW_CURSOR_DISABLED` then the cursor position is
  *  unconstrained and limited only by the minimum and maximum values of
  *  a `double`.
  *
  *  @param[in] window The desired window.
  *  @param[in] xpos The desired x-coordinate, relative to the left edge of the
  *  client area.
  *  @param[in] ypos The desired y-coordinate, relative to the top edge of the
  *  client area.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @remark @x11 Due to the asynchronous nature of X11, it may take a moment for
  *  the window focus event to arrive.  This means you may not be able to set the
  *  cursor position directly after window creation.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_pos
  *  @sa glfwGetCursorPos
  *
  *  @since Added in version 3.0.  Replaces `glfwSetMousePos`.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwSetCursorPos(GLFWwindow* window, double xpos, double ypos);
 
 /*! @brief Creates a custom cursor.
  *
  *  Creates a new custom cursor image that can be set for a window with @ref
  *  glfwSetCursor.  The cursor can be destroyed with @ref glfwDestroyCursor.
  *  Any remaining cursors are destroyed by @ref glfwTerminate.
  *
  *  The pixels are 32-bit, little-endian, non-premultiplied RGBA, i.e. eight
  *  bits per channel.  They are arranged canonically as packed sequential rows,
  *  starting from the top-left corner.
  *
  *  The cursor hotspot is specified in pixels, relative to the upper-left corner
  *  of the cursor image.  Like all other coordinate systems in GLFW, the X-axis
  *  points to the right and the Y-axis points down.
  *
  *  @param[in] image The desired cursor image.
  *  @param[in] xhot The desired x-coordinate, in pixels, of the cursor hotspot.
  *  @param[in] yhot The desired y-coordinate, in pixels, of the cursor hotspot.
  *  @return The handle of the created cursor, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The specified image data is copied before this function
  *  returns.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_object
  *  @sa glfwDestroyCursor
  *  @sa glfwCreateStandardCursor
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWcursor* glfwCreateCursor(const GLFWimage* image, int xhot, int yhot);
 
 /*! @brief Creates a cursor with a standard shape.
  *
  *  Returns a cursor with a [standard shape](@ref shapes), that can be set for
  *  a window with @ref glfwSetCursor.
  *
  *  @param[in] shape One of the [standard shapes](@ref shapes).
  *  @return A new cursor ready to use or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_object
  *  @sa glfwCreateCursor
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWcursor* glfwCreateStandardCursor(int shape);
 
 /*! @brief Destroys a cursor.
  *
  *  This function destroys a cursor previously created with @ref
  *  glfwCreateCursor.  Any remaining cursors will be destroyed by @ref
  *  glfwTerminate.
  *
  *  @param[in] cursor The cursor object to destroy.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @reentrancy This function must not be called from a callback.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_object
  *  @sa glfwCreateCursor
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwDestroyCursor(GLFWcursor* cursor);
 
 /*! @brief Sets the cursor for the window.
  *
  *  This function sets the cursor image to be used when the cursor is over the
  *  client area of the specified window.  The set cursor will only be visible
  *  when the [cursor mode](@ref cursor_mode) of the window is
  *  `GLFW_CURSOR_NORMAL`.
  *
  *  On some platforms, the set cursor may not be visible unless the window also
  *  has input focus.
  *
  *  @param[in] window The window to set the cursor for.
  *  @param[in] cursor The cursor to set, or `NULL` to switch back to the default
  *  arrow cursor.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_object
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwSetCursor(GLFWwindow* window, GLFWcursor* cursor);
 
 /*! @brief Sets the key callback.
  *
  *  This function sets the key callback of the specified window, which is called
  *  when a key is pressed, repeated or released.
  *
  *  The key functions deal with physical keys, with layout independent
  *  [key tokens](@ref keys) named after their values in the standard US keyboard
  *  layout.  If you want to input text, use the
  *  [character callback](@ref glfwSetCharCallback) instead.
  *
  *  When a window loses input focus, it will generate synthetic key release
  *  events for all pressed keys.  You can tell these events from user-generated
  *  events by the fact that the synthetic ones are generated after the focus
  *  loss event has been processed, i.e. after the
  *  [window focus callback](@ref glfwSetWindowFocusCallback) has been called.
  *
  *  The scancode of a key is specific to that platform or sometimes even to that
  *  machine.  Scancodes are intended to allow users to bind keys that don't have
  *  a GLFW key token.  Such keys have `key` set to `GLFW_KEY_UNKNOWN`, their
  *  state is not saved and so it cannot be queried with @ref glfwGetKey.
  *
  *  Sometimes GLFW needs to generate synthetic key events, in which case the
  *  scancode may be zero.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new key callback, or `NULL` to remove the currently
  *  set callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_key
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter and return value.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* window, GLFWkeyfun cbfun);
 
 /*! @brief Sets the Unicode character callback.
  *
  *  This function sets the character callback of the specified window, which is
  *  called when a Unicode character is input.
  *
  *  The character callback is intended for Unicode text input.  As it deals with
  *  characters, it is keyboard layout dependent, whereas the
  *  [key callback](@ref glfwSetKeyCallback) is not.  Characters do not map 1:1
  *  to physical keys, as a key may produce zero, one or more characters.  If you
  *  want to know whether a specific physical key was pressed or released, see
  *  the key callback instead.
  *
  *  The character callback behaves as system text input normally does and will
  *  not be called if modifier keys are held down that would prevent normal text
  *  input on that platform, for example a Super (Command) key on OS X or Alt key
  *  on Windows.  There is a
  *  [character with modifiers callback](@ref glfwSetCharModsCallback) that
  *  receives these events.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_char
  *
  *  @since Added in version 2.4.
  *  @glfw3 Added window handle parameter and return value.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWcharfun glfwSetCharCallback(GLFWwindow* window, GLFWcharfun cbfun);
 
 /*! @brief Sets the Unicode character with modifiers callback.
  *
  *  This function sets the character with modifiers callback of the specified
  *  window, which is called when a Unicode character is input regardless of what
  *  modifier keys are used.
  *
  *  The character with modifiers callback is intended for implementing custom
  *  Unicode character input.  For regular Unicode text input, see the
  *  [character callback](@ref glfwSetCharCallback).  Like the character
  *  callback, the character with modifiers callback deals with characters and is
  *  keyboard layout dependent.  Characters do not map 1:1 to physical keys, as
  *  a key may produce zero, one or more characters.  If you want to know whether
  *  a specific physical key was pressed or released, see the
  *  [key callback](@ref glfwSetKeyCallback) instead.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or an
  *  error occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_char
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWcharmodsfun glfwSetCharModsCallback(GLFWwindow* window, GLFWcharmodsfun cbfun);
 
 /*! @brief Sets the mouse button callback.
  *
  *  This function sets the mouse button callback of the specified window, which
  *  is called when a mouse button is pressed or released.
  *
  *  When a window loses input focus, it will generate synthetic mouse button
  *  release events for all pressed mouse buttons.  You can tell these events
  *  from user-generated events by the fact that the synthetic ones are generated
  *  after the focus loss event has been processed, i.e. after the
  *  [window focus callback](@ref glfwSetWindowFocusCallback) has been called.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref input_mouse_button
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter and return value.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWmousebuttonfun glfwSetMouseButtonCallback(GLFWwindow* window, GLFWmousebuttonfun cbfun);
 
 /*! @brief Sets the cursor position callback.
  *
  *  This function sets the cursor position callback of the specified window,
  *  which is called when the cursor is moved.  The callback is provided with the
  *  position, in screen coordinates, relative to the upper-left corner of the
  *  client area of the window.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_pos
  *
  *  @since Added in version 3.0.  Replaces `glfwSetMousePosCallback`.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWcursorposfun glfwSetCursorPosCallback(GLFWwindow* window, GLFWcursorposfun cbfun);
 
 /*! @brief Sets the cursor enter/exit callback.
  *
  *  This function sets the cursor boundary crossing callback of the specified
  *  window, which is called when the cursor enters or leaves the client area of
  *  the window.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref cursor_enter
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWcursorenterfun glfwSetCursorEnterCallback(GLFWwindow* window, GLFWcursorenterfun cbfun);
 
 /*! @brief Sets the scroll callback.
  *
  *  This function sets the scroll callback of the specified window, which is
  *  called when a scrolling device is used, such as a mouse wheel or scrolling
  *  area of a touchpad.
  *
  *  The scroll callback receives all scrolling input, like that from a mouse
  *  wheel or a touchpad scrolling area.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new scroll callback, or `NULL` to remove the currently
  *  set callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref scrolling
  *
  *  @since Added in version 3.0.  Replaces `glfwSetMouseWheelCallback`.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* window, GLFWscrollfun cbfun);
 
 /*! @brief Sets the file drop callback.
  *
  *  This function sets the file drop callback of the specified window, which is
  *  called when one or more dragged files are dropped on the window.
  *
  *  Because the path array and its strings may have been generated specifically
  *  for that event, they are not guaranteed to be valid after the callback has
  *  returned.  If you wish to use them after the callback returns, you need to
  *  make a deep copy.
  *
  *  @param[in] window The window whose callback to set.
  *  @param[in] cbfun The new file drop callback, or `NULL` to remove the
  *  currently set callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref path_drop
  *
  *  @since Added in version 3.1.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWdropfun glfwSetDropCallback(GLFWwindow* window, GLFWdropfun cbfun);
 
 /*! @brief Returns whether the specified joystick is present.
  *
  *  This function returns whether the specified joystick is present.
  *
  *  @param[in] joy The [joystick](@ref joysticks) to query.
  *  @return `GLFW_TRUE` if the joystick is present, or `GLFW_FALSE` otherwise.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref joystick
  *
  *  @since Added in version 3.0.  Replaces `glfwGetJoystickParam`.
  *
  *  @ingroup input
  */
 GLFWAPI int glfwJoystickPresent(int joy);
 
 /*! @brief Returns the values of all axes of the specified joystick.
  *
  *  This function returns the values of all axes of the specified joystick.
  *  Each element in the array is a value between -1.0 and 1.0.
  *
  *  Querying a joystick slot with no device present is not an error, but will
  *  cause this function to return `NULL`.  Call @ref glfwJoystickPresent to
  *  check device presence.
  *
  *  @param[in] joy The [joystick](@ref joysticks) to query.
  *  @param[out] count Where to store the number of axis values in the returned
  *  array.  This is set to zero if an error occurred.
  *  @return An array of axis values, or `NULL` if the joystick is not present.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned array is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the specified joystick is
  *  disconnected, this function is called again for that joystick or the library
  *  is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref joystick_axis
  *
  *  @since Added in version 3.0.  Replaces `glfwGetJoystickPos`.
  *
  *  @ingroup input
  */
 GLFWAPI const float* glfwGetJoystickAxes(int joy, int* count);
 
 /*! @brief Returns the state of all buttons of the specified joystick.
  *
  *  This function returns the state of all buttons of the specified joystick.
  *  Each element in the array is either `GLFW_PRESS` or `GLFW_RELEASE`.
  *
  *  Querying a joystick slot with no device present is not an error, but will
  *  cause this function to return `NULL`.  Call @ref glfwJoystickPresent to
  *  check device presence.
  *
  *  @param[in] joy The [joystick](@ref joysticks) to query.
  *  @param[out] count Where to store the number of button states in the returned
  *  array.  This is set to zero if an error occurred.
  *  @return An array of button states, or `NULL` if the joystick is not present.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned array is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the specified joystick is
  *  disconnected, this function is called again for that joystick or the library
  *  is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref joystick_button
  *
  *  @since Added in version 2.2.
  *  @glfw3 Changed to return a dynamic array.
  *
  *  @ingroup input
  */
 GLFWAPI const unsigned char* glfwGetJoystickButtons(int joy, int* count);
 
 /*! @brief Returns the name of the specified joystick.
  *
  *  This function returns the name, encoded as UTF-8, of the specified joystick.
  *  The returned string is allocated and freed by GLFW.  You should not free it
  *  yourself.
  *
  *  Querying a joystick slot with no device present is not an error, but will
  *  cause this function to return `NULL`.  Call @ref glfwJoystickPresent to
  *  check device presence.
  *
  *  @param[in] joy The [joystick](@ref joysticks) to query.
  *  @return The UTF-8 encoded name of the joystick, or `NULL` if the joystick
  *  is not present.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned string is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the specified joystick is
  *  disconnected, this function is called again for that joystick or the library
  *  is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref joystick_name
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup input
  */
 GLFWAPI const char* glfwGetJoystickName(int joy);
 
 /*! @brief Sets the joystick configuration callback.
  *
  *  This function sets the joystick configuration callback, or removes the
  *  currently set callback.  This is called when a joystick is connected to or
  *  disconnected from the system.
  *
  *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
  *  callback.
  *  @return The previously set callback, or `NULL` if no callback was set or the
  *  library had not been [initialized](@ref intro_init).
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref joystick_event
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup input
  */
 GLFWAPI GLFWjoystickfun glfwSetJoystickCallback(GLFWjoystickfun cbfun);
 
 /*! @brief Sets the clipboard to the specified string.
  *
  *  This function sets the system clipboard to the specified, UTF-8 encoded
  *  string.
  *
  *  @param[in] window The window that will own the clipboard contents.
  *  @param[in] string A UTF-8 encoded string.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The specified string is copied before this function
  *  returns.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref clipboard
  *  @sa glfwGetClipboardString
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwSetClipboardString(GLFWwindow* window, const char* string);
 
 /*! @brief Returns the contents of the clipboard as a string.
  *
  *  This function returns the contents of the system clipboard, if it contains
  *  or is convertible to a UTF-8 encoded string.  If the clipboard is empty or
  *  if its contents cannot be converted, `NULL` is returned and a @ref
  *  GLFW_FORMAT_UNAVAILABLE error is generated.
  *
  *  @param[in] window The window that will request the clipboard contents.
  *  @return The contents of the clipboard as a UTF-8 encoded string, or `NULL`
  *  if an [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @pointer_lifetime The returned string is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is valid until the next call to @ref
  *  glfwGetClipboardString or @ref glfwSetClipboardString, or until the library
  *  is terminated.
  *
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref clipboard
  *  @sa glfwSetClipboardString
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup input
  */
 GLFWAPI const char* glfwGetClipboardString(GLFWwindow* window);
 
 /*! @brief Returns the value of the GLFW timer.
  *
  *  This function returns the value of the GLFW timer.  Unless the timer has
  *  been set using @ref glfwSetTime, the timer measures time elapsed since GLFW
  *  was initialized.
  *
  *  The resolution of the timer is system dependent, but is usually on the order
  *  of a few micro- or nanoseconds.  It uses the highest-resolution monotonic
  *  time source on each supported platform.
  *
  *  @return The current value, in seconds, or zero if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.  Reading of the
  *  internal timer offset is not atomic.
  *
  *  @sa @ref time
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup input
  */
 GLFWAPI double glfwGetTime(void);
 
 /*! @brief Sets the GLFW timer.
  *
  *  This function sets the value of the GLFW timer.  It then continues to count
  *  up from that value.  The value must be a positive finite number less than
  *  or equal to 18446744073.0, which is approximately 584.5 years.
  *
  *  @param[in] time The new value, in seconds.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_INVALID_VALUE.
  *
  *  @remark The upper limit of the timer is calculated as
  *  floor((2<sup>64</sup> - 1) / 10<sup>9</sup>) and is due to implementations
  *  storing nanoseconds in 64 bits.  The limit may be increased in the future.
  *
  *  @thread_safety This function may be called from any thread.  Writing of the
  *  internal timer offset is not atomic.
  *
  *  @sa @ref time
  *
  *  @since Added in version 2.2.
  *
  *  @ingroup input
  */
 GLFWAPI void glfwSetTime(double time);
 
 /*! @brief Returns the current value of the raw timer.
  *
  *  This function returns the current value of the raw timer, measured in
  *  1&nbsp;/&nbsp;frequency seconds.  To get the frequency, call @ref
  *  glfwGetTimerFrequency.
  *
  *  @return The value of the timer, or zero if an 
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref time
  *  @sa glfwGetTimerFrequency
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup input
  */
 GLFWAPI uint64_t glfwGetTimerValue(void);
 
 /*! @brief Returns the frequency, in Hz, of the raw timer.
  *
  *  This function returns the frequency, in Hz, of the raw timer.
  *
  *  @return The frequency of the timer, in Hz, or zero if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref time
  *  @sa glfwGetTimerValue
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup input
  */
 GLFWAPI uint64_t glfwGetTimerFrequency(void);
 
 /*! @brief Makes the context of the specified window current for the calling
  *  thread.
  *
  *  This function makes the OpenGL or OpenGL ES context of the specified window
  *  current on the calling thread.  A context can only be made current on
  *  a single thread at a time and each thread can have only a single current
  *  context at a time.
  *
  *  By default, making a context non-current implicitly forces a pipeline flush.
  *  On machines that support `GL_KHR_context_flush_control`, you can control
  *  whether a context performs this flush by setting the
  *  [GLFW_CONTEXT_RELEASE_BEHAVIOR](@ref window_hints_ctx) window hint.
  *
  *  The specified window must have an OpenGL or OpenGL ES context.  Specifying
  *  a window without a context will generate a @ref GLFW_NO_WINDOW_CONTEXT
  *  error.
  *
  *  @param[in] window The window whose context to make current, or `NULL` to
  *  detach the current context.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_NO_WINDOW_CONTEXT and @ref GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref context_current
  *  @sa glfwGetCurrentContext
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup context
  */
 GLFWAPI void glfwMakeContextCurrent(GLFWwindow* window);
 
 /*! @brief Returns the window whose context is current on the calling thread.
  *
  *  This function returns the window whose OpenGL or OpenGL ES context is
  *  current on the calling thread.
  *
  *  @return The window whose context is current, or `NULL` if no window's
  *  context is current.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref context_current
  *  @sa glfwMakeContextCurrent
  *
  *  @since Added in version 3.0.
  *
  *  @ingroup context
  */
 GLFWAPI GLFWwindow* glfwGetCurrentContext(void);
 
 /*! @brief Swaps the front and back buffers of the specified window.
  *
  *  This function swaps the front and back buffers of the specified window when
  *  rendering with OpenGL or OpenGL ES.  If the swap interval is greater than
  *  zero, the GPU driver waits the specified number of screen updates before
  *  swapping the buffers.
  *
  *  The specified window must have an OpenGL or OpenGL ES context.  Specifying
  *  a window without a context will generate a @ref GLFW_NO_WINDOW_CONTEXT
  *  error.
  *
  *  This function does not apply to Vulkan.  If you are rendering with Vulkan,
  *  see `vkQueuePresentKHR` instead.
  *
  *  @param[in] window The window whose buffers to swap.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_NO_WINDOW_CONTEXT and @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark __EGL:__ The context of the specified window must be current on the
  *  calling thread.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref buffer_swap
  *  @sa glfwSwapInterval
  *
  *  @since Added in version 1.0.
  *  @glfw3 Added window handle parameter.
  *
  *  @ingroup window
  */
 GLFWAPI void glfwSwapBuffers(GLFWwindow* window);
 
 /*! @brief Sets the swap interval for the current context.
  *
  *  This function sets the swap interval for the current OpenGL or OpenGL ES
  *  context, i.e. the number of screen updates to wait from the time @ref
  *  glfwSwapBuffers was called before swapping the buffers and returning.  This
  *  is sometimes called _vertical synchronization_, _vertical retrace
  *  synchronization_ or just _vsync_.
  *
  *  Contexts that support either of the `WGL_EXT_swap_control_tear` and
  *  `GLX_EXT_swap_control_tear` extensions also accept negative swap intervals,
  *  which allow the driver to swap even if a frame arrives a little bit late.
  *  You can check for the presence of these extensions using @ref
  *  glfwExtensionSupported.  For more information about swap tearing, see the
  *  extension specifications.
  *
  *  A context must be current on the calling thread.  Calling this function
  *  without a current context will cause a @ref GLFW_NO_CURRENT_CONTEXT error.
  *
  *  This function does not apply to Vulkan.  If you are rendering with Vulkan,
  *  see the present mode of your swapchain instead.
  *
  *  @param[in] interval The minimum number of screen updates to wait for
  *  until the buffers are swapped by @ref glfwSwapBuffers.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_NO_CURRENT_CONTEXT and @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark This function is not called during context creation, leaving the
  *  swap interval set to whatever is the default on that platform.  This is done
  *  because some swap interval extensions used by GLFW do not allow the swap
  *  interval to be reset to zero once it has been set to a non-zero value.
  *
  *  @remark Some GPU drivers do not honor the requested swap interval, either
  *  because of a user setting that overrides the application's request or due to
  *  bugs in the driver.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref buffer_swap
  *  @sa glfwSwapBuffers
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup context
  */
 GLFWAPI void glfwSwapInterval(int interval);
 
 /*! @brief Returns whether the specified extension is available.
  *
  *  This function returns whether the specified
  *  [API extension](@ref context_glext) is supported by the current OpenGL or
  *  OpenGL ES context.  It searches both for client API extension and context
  *  creation API extensions.
  *
  *  A context must be current on the calling thread.  Calling this function
  *  without a current context will cause a @ref GLFW_NO_CURRENT_CONTEXT error.
  *
  *  As this functions retrieves and searches one or more extension strings each
  *  call, it is recommended that you cache its results if it is going to be used
  *  frequently.  The extension strings will not change during the lifetime of
  *  a context, so there is no danger in doing this.
  *
  *  This function does not apply to Vulkan.  If you are using Vulkan, see @ref
  *  glfwGetRequiredInstanceExtensions, `vkEnumerateInstanceExtensionProperties`
  *  and `vkEnumerateDeviceExtensionProperties` instead.
  *
  *  @param[in] extension The ASCII encoded name of the extension.
  *  @return `GLFW_TRUE` if the extension is available, or `GLFW_FALSE`
  *  otherwise.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_NO_CURRENT_CONTEXT, @ref GLFW_INVALID_VALUE and @ref
  *  GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref context_glext
  *  @sa glfwGetProcAddress
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup context
  */
 GLFWAPI int glfwExtensionSupported(const char* extension);
 
 /*! @brief Returns the address of the specified function for the current
  *  context.
  *
  *  This function returns the address of the specified OpenGL or OpenGL ES
  *  [core or extension function](@ref context_glext), if it is supported
  *  by the current context.
  *
  *  A context must be current on the calling thread.  Calling this function
  *  without a current context will cause a @ref GLFW_NO_CURRENT_CONTEXT error.
  *
  *  This function does not apply to Vulkan.  If you are rendering with Vulkan,
  *  see @ref glfwGetInstanceProcAddress, `vkGetInstanceProcAddr` and
  *  `vkGetDeviceProcAddr` instead.
  *
  *  @param[in] procname The ASCII encoded name of the function.
  *  @return The address of the function, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_NO_CURRENT_CONTEXT and @ref GLFW_PLATFORM_ERROR.
  *
  *  @remark The address of a given function is not guaranteed to be the same
  *  between contexts.
  *
  *  @remark This function may return a non-`NULL` address despite the
  *  associated version or extension not being available.  Always check the
  *  context version or extension string first.
  *
  *  @pointer_lifetime The returned function pointer is valid until the context
  *  is destroyed or the library is terminated.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref context_glext
  *  @sa glfwExtensionSupported
  *
  *  @since Added in version 1.0.
  *
  *  @ingroup context
  */
 GLFWAPI GLFWglproc glfwGetProcAddress(const char* procname);
 
 /*! @brief Returns whether the Vulkan loader has been found.
  *
  *  This function returns whether the Vulkan loader has been found.  This check
  *  is performed by @ref glfwInit.
  *
  *  The availability of a Vulkan loader does not by itself guarantee that window
  *  surface creation or even device creation is possible.  Call @ref
  *  glfwGetRequiredInstanceExtensions to check whether the extensions necessary
  *  for Vulkan surface creation are available and @ref
  *  glfwGetPhysicalDevicePresentationSupport to check whether a queue family of
  *  a physical device supports image presentation.
  *
  *  @return `GLFW_TRUE` if Vulkan is available, or `GLFW_FALSE` otherwise.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref vulkan_support
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup vulkan
  */
 GLFWAPI int glfwVulkanSupported(void);
 
 /*! @brief Returns the Vulkan instance extensions required by GLFW.
  *
  *  This function returns an array of names of Vulkan instance extensions required
  *  by GLFW for creating Vulkan surfaces for GLFW windows.  If successful, the
  *  list will always contains `VK_KHR_surface`, so if you don't require any
  *  additional extensions you can pass this list directly to the
  *  `VkInstanceCreateInfo` struct.
  *
  *  If Vulkan is not available on the machine, this function returns `NULL` and
  *  generates a @ref GLFW_API_UNAVAILABLE error.  Call @ref glfwVulkanSupported
  *  to check whether Vulkan is available.
  *
  *  If Vulkan is available but no set of extensions allowing window surface
  *  creation was found, this function returns `NULL`.  You may still use Vulkan
  *  for off-screen rendering and compute work.
  *
  *  @param[out] count Where to store the number of extensions in the returned
  *  array.  This is set to zero if an error occurred.
  *  @return An array of ASCII encoded extension names, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_API_UNAVAILABLE.
  *
  *  @remarks Additional extensions may be required by future versions of GLFW.
  *  You should check if any extensions you wish to enable are already in the
  *  returned array, as it is an error to specify an extension more than once in
  *  the `VkInstanceCreateInfo` struct.
  *
  *  @pointer_lifetime The returned array is allocated and freed by GLFW.  You
  *  should not free it yourself.  It is guaranteed to be valid only until the
  *  library is terminated.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref vulkan_ext
  *  @sa glfwCreateWindowSurface
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup vulkan
  */
 GLFWAPI const char** glfwGetRequiredInstanceExtensions(uint32_t* count);
 
 #if defined(VK_VERSION_1_0)
 
 /*! @brief Returns the address of the specified Vulkan instance function.
  *
  *  This function returns the address of the specified Vulkan core or extension
  *  function for the specified instance.  If instance is set to `NULL` it can
  *  return any function exported from the Vulkan loader, including at least the
  *  following functions:
  *
  *  - `vkEnumerateInstanceExtensionProperties`
  *  - `vkEnumerateInstanceLayerProperties`
  *  - `vkCreateInstance`
  *  - `vkGetInstanceProcAddr`
  *
  *  If Vulkan is not available on the machine, this function returns `NULL` and
  *  generates a @ref GLFW_API_UNAVAILABLE error.  Call @ref glfwVulkanSupported
  *  to check whether Vulkan is available.
  *
  *  This function is equivalent to calling `vkGetInstanceProcAddr` with
  *  a platform-specific query of the Vulkan loader as a fallback.
  *
  *  @param[in] instance The Vulkan instance to query, or `NULL` to retrieve
  *  functions related to instance creation.
  *  @param[in] procname The ASCII encoded name of the function.
  *  @return The address of the function, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_API_UNAVAILABLE.
  *
  *  @pointer_lifetime The returned function pointer is valid until the library
  *  is terminated.
  *
  *  @thread_safety This function may be called from any thread.
  *
  *  @sa @ref vulkan_proc
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup vulkan
  */
 GLFWAPI GLFWvkproc glfwGetInstanceProcAddress(VkInstance instance, const char* procname);
 
 /*! @brief Returns whether the specified queue family can present images.
  *
  *  This function returns whether the specified queue family of the specified
  *  physical device supports presentation to the platform GLFW was built for.
  *
  *  If Vulkan or the required window surface creation instance extensions are
  *  not available on the machine, or if the specified instance was not created
  *  with the required extensions, this function returns `GLFW_FALSE` and
  *  generates a @ref GLFW_API_UNAVAILABLE error.  Call @ref glfwVulkanSupported
  *  to check whether Vulkan is available and @ref
  *  glfwGetRequiredInstanceExtensions to check what instance extensions are
  *  required.
  *
  *  @param[in] instance The instance that the physical device belongs to.
  *  @param[in] device The physical device that the queue family belongs to.
  *  @param[in] queuefamily The index of the queue family to query.
  *  @return `GLFW_TRUE` if the queue family supports presentation, or
  *  `GLFW_FALSE` otherwise.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_API_UNAVAILABLE and @ref GLFW_PLATFORM_ERROR.
  *
  *  @thread_safety This function may be called from any thread.  For
  *  synchronization details of Vulkan objects, see the Vulkan specification.
  *
  *  @sa @ref vulkan_present
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup vulkan
  */
 GLFWAPI int glfwGetPhysicalDevicePresentationSupport(VkInstance instance, VkPhysicalDevice device, uint32_t queuefamily);
 
 /*! @brief Creates a Vulkan surface for the specified window.
  *
  *  This function creates a Vulkan surface for the specified window.
  *
  *  If the Vulkan loader was not found at initialization, this function returns
  *  `VK_ERROR_INITIALIZATION_FAILED` and generates a @ref GLFW_API_UNAVAILABLE
  *  error.  Call @ref glfwVulkanSupported to check whether the Vulkan loader was
  *  found.
  *
  *  If the required window surface creation instance extensions are not
  *  available or if the specified instance was not created with these extensions
  *  enabled, this function returns `VK_ERROR_EXTENSION_NOT_PRESENT` and
  *  generates a @ref GLFW_API_UNAVAILABLE error.  Call @ref
  *  glfwGetRequiredInstanceExtensions to check what instance extensions are
  *  required.
  *
  *  The window surface must be destroyed before the specified Vulkan instance.
  *  It is the responsibility of the caller to destroy the window surface.  GLFW
  *  does not destroy it for you.  Call `vkDestroySurfaceKHR` to destroy the
  *  surface.
  *
  *  @param[in] instance The Vulkan instance to create the surface in.
  *  @param[in] window The window to create the surface for.
  *  @param[in] allocator The allocator to use, or `NULL` to use the default
  *  allocator.
  *  @param[out] surface Where to store the handle of the surface.  This is set
  *  to `VK_NULL_HANDLE` if an error occurred.
  *  @return `VK_SUCCESS` if successful, or a Vulkan error code if an
  *  [error](@ref error_handling) occurred.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
  *  GLFW_API_UNAVAILABLE and @ref GLFW_PLATFORM_ERROR.
  *
  *  @remarks If an error occurs before the creation call is made, GLFW returns
  *  the Vulkan error code most appropriate for the error.  Appropriate use of
  *  @ref glfwVulkanSupported and @ref glfwGetRequiredInstanceExtensions should
  *  eliminate almost all occurrences of these errors.
  *
  *  @thread_safety This function may be called from any thread.  For
  *  synchronization details of Vulkan objects, see the Vulkan specification.
  *
  *  @sa @ref vulkan_surface
  *  @sa glfwGetRequiredInstanceExtensions
  *
  *  @since Added in version 3.2.
  *
  *  @ingroup vulkan
  */
 GLFWAPI VkResult glfwCreateWindowSurface(VkInstance instance, GLFWwindow* window, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface);
 
 #endif /*VK_VERSION_1_0*/
 
 
 /*************************************************************************
  * Global definition cleanup
  *************************************************************************/
 
 /* ------------------- BEGIN SYSTEM/COMPILER SPECIFIC -------------------- */
 
 #ifdef GLFW_WINGDIAPI_DEFINED
  #undef WINGDIAPI
  #undef GLFW_WINGDIAPI_DEFINED
 #endif
 
 #ifdef GLFW_CALLBACK_DEFINED
  #undef CALLBACK
  #undef GLFW_CALLBACK_DEFINED
 #endif
 
 /* -------------------- END SYSTEM/COMPILER SPECIFIC --------------------- */
 
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* _glfw3_h_ */