-#if defined(_WIN32) && !defined(_WINDEF_) && !defined(MESA)
-# if !defined(MESA_MINWARN)
-# pragma message( "note: WINDOWS.H not included, providing Mesa definition of CALLBACK macro" )
-# pragma message( "----: and PROC typedef. If you receive compiler warnings about either ")
-# pragma message( "----: being multiply defined you should include WINDOWS.H priot to gl/glut.h" )
-# endif
-# define CALLBACK __stdcall
-typedef int (GLUTAPIENTRY *PROC)();
-typedef void *HGLRC;
-typedef void *HDC;
-typedef unsigned long COLORREF;
-#endif
-
-#if defined(_WIN32) && !defined(_WINGDI_) && !defined(MESA)
-# if !defined(MESA_MINWARN)
-# pragma message( "note: WINDOWS.H not included, providing Mesa definition of wgl functions" )
-# pragma message( "----: and macros. If you receive compiler warnings about any being multiply ")
-# pragma message( "----: defined you should include WINDOWS.H priot to gl/glut.h" )
-# endif
-# define WGL_FONT_LINES 0
-# define WGL_FONT_POLYGONS 1
-# ifdef UNICODE
-# define wglUseFontBitmaps wglUseFontBitmapsW
-# define wglUseFontOutlines wglUseFontOutlinesW
-# else
-# define wglUseFontBitmaps wglUseFontBitmapsA
-# define wglUseFontOutlines wglUseFontOutlinesA
-# endif /* !UNICODE */
-typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
-typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
-# pragma warning( push )
-# pragma warning( disable : 4273 ) /* 'function' : inconsistent DLL linkage. dllexport assumed. */
-# define WGLAPI __declspec(dllimport)
-WGLAPI int GLAPIENTRY wglDeleteContext(HGLRC);
-WGLAPI int GLAPIENTRY wglMakeCurrent(HDC,HGLRC);
-WGLAPI int GLAPIENTRY wglSetPixelFormat(HDC, int, const PIXELFORMATDESCRIPTOR *);
-WGLAPI int GLAPIENTRY wglSwapBuffers(HDC hdc);
-WGLAPI HDC GLAPIENTRY wglGetCurrentDC(void);
-WGLAPI HGLRC GLAPIENTRY wglCreateContext(HDC);
-WGLAPI HGLRC GLAPIENTRY wglCreateLayerContext(HDC,int);
-WGLAPI HGLRC GLAPIENTRY wglGetCurrentContext(void);
-WGLAPI PROC GLAPIENTRY wglGetProcAddress(const char*);
-WGLAPI int GLAPIENTRY wglChoosePixelFormat(HDC, const PIXELFORMATDESCRIPTOR *);
-WGLAPI int GLAPIENTRY wglCopyContext(HGLRC, HGLRC, unsigned int);
-WGLAPI int GLAPIENTRY wglDeleteContext(HGLRC);
-WGLAPI int GLAPIENTRY wglDescribeLayerPlane(HDC, int, int, unsigned int,LPLAYERPLANEDESCRIPTOR);
-WGLAPI int GLAPIENTRY wglDescribePixelFormat(HDC,int, unsigned int, LPPIXELFORMATDESCRIPTOR);
-WGLAPI int GLAPIENTRY wglGetLayerPaletteEntries(HDC, int, int, int,COLORREF *);
-WGLAPI int GLAPIENTRY wglGetPixelFormat(HDC hdc);
-WGLAPI int GLAPIENTRY wglMakeCurrent(HDC, HGLRC);
-WGLAPI int GLAPIENTRY wglRealizeLayerPalette(HDC, int, int);
-WGLAPI int GLAPIENTRY wglSetLayerPaletteEntries(HDC, int, int, int,const COLORREF *);
-WGLAPI int GLAPIENTRY wglShareLists(HGLRC, HGLRC);
-WGLAPI int GLAPIENTRY wglSwapLayerBuffers(HDC, unsigned int);
-WGLAPI int GLAPIENTRY wglUseFontBitmapsA(HDC, unsigned long, unsigned long, unsigned long);
-WGLAPI int GLAPIENTRY wglUseFontBitmapsW(HDC, unsigned long, unsigned long, unsigned long);
-WGLAPI int GLAPIENTRY wglUseFontOutlinesA(HDC, unsigned long, unsigned long, unsigned long, float,float, int, LPGLYPHMETRICSFLOAT);
-WGLAPI int GLAPIENTRY wglUseFontOutlinesW(HDC, unsigned long, unsigned long, unsigned long, float,float, int, LPGLYPHMETRICSFLOAT);
-WGLAPI int GLAPIENTRY SwapBuffers(HDC);
-WGLAPI int GLAPIENTRY ChoosePixelFormat(HDC,const PIXELFORMATDESCRIPTOR *);
-WGLAPI int GLAPIENTRY DescribePixelFormat(HDC,int,unsigned int,LPPIXELFORMATDESCRIPTOR);
-WGLAPI int GLAPIENTRY GetPixelFormat(HDC);
-WGLAPI int GLAPIENTRY SetPixelFormat(HDC,int,const PIXELFORMATDESCRIPTOR *);
-# undef WGLAPI
-# pragma warning( pop )
-#endif
-
-#else /* _WIN32 not defined */
-
-/* Define GLUTAPIENTRY and GLUTCALLBACK to nothing if we aren't on Win32. */