mirror of
https://github.com/glfw/glfw.git
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256 lines
8.7 KiB
C
256 lines
8.7 KiB
C
//========================================================================
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// GLFW - An OpenGL framework
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// Platform: Win32/WGL
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// API version: 3.0
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// WWW: http://www.glfw.org/
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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// With the Borland C++ compiler, we want to disable FPU exceptions
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#ifdef __BORLANDC__
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#include <float.h>
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#endif // __BORLANDC__
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//========================================================================
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// Load necessary libraries (DLLs)
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//========================================================================
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static GLboolean initLibraries(void)
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{
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// gdi32.dll (OpenGL pixel format functions & SwapBuffers)
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#ifndef _GLFW_NO_DLOAD_GDI32
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_glfwLibrary.Libs.gdi32 = LoadLibrary("gdi32.dll");
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if (_glfwLibrary.Libs.gdi32 != NULL)
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{
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_glfwLibrary.Libs.ChoosePixelFormat = (CHOOSEPIXELFORMAT_T)
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GetProcAddress(_glfwLibrary.Libs.gdi32, "ChoosePixelFormat");
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_glfwLibrary.Libs.DescribePixelFormat = (DESCRIBEPIXELFORMAT_T)
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GetProcAddress(_glfwLibrary.Libs.gdi32, "DescribePixelFormat");
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_glfwLibrary.Libs.GetPixelFormat = (GETPIXELFORMAT_T)
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GetProcAddress(_glfwLibrary.Libs.gdi32, "GetPixelFormat");
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_glfwLibrary.Libs.SetPixelFormat = (SETPIXELFORMAT_T)
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GetProcAddress(_glfwLibrary.Libs.gdi32, "SetPixelFormat");
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_glfwLibrary.Libs.SwapBuffers = (SWAPBUFFERS_T)
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GetProcAddress(_glfwLibrary.Libs.gdi32, "SwapBuffers");
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if (_glfwLibrary.Libs.ChoosePixelFormat &&
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_glfwLibrary.Libs.DescribePixelFormat &&
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_glfwLibrary.Libs.GetPixelFormat &&
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_glfwLibrary.Libs.SetPixelFormat &&
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_glfwLibrary.Libs.SwapBuffers)
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{
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FreeLibrary(_glfwLibrary.Libs.gdi32);
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_glfwLibrary.Libs.gdi32 = NULL;
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return GL_FALSE;
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}
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}
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else
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return GL_FALSE;
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#endif // _GLFW_NO_DLOAD_GDI32
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// winmm.dll (for joystick and timer support)
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#ifndef _GLFW_NO_DLOAD_WINMM
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_glfwLibrary.Libs.winmm = LoadLibrary("winmm.dll");
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if (_glfwLibrary.Libs.winmm != NULL)
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{
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_glfwLibrary.Libs.joyGetDevCapsA = (JOYGETDEVCAPSA_T)
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GetProcAddress(_glfwLibrary.Libs.winmm, "joyGetDevCapsA");
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_glfwLibrary.Libs.joyGetPos = (JOYGETPOS_T)
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GetProcAddress(_glfwLibrary.Libs.winmm, "joyGetPos");
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_glfwLibrary.Libs.joyGetPosEx = (JOYGETPOSEX_T)
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GetProcAddress(_glfwLibrary.Libs.winmm, "joyGetPosEx");
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_glfwLibrary.Libs.timeGetTime = (TIMEGETTIME_T)
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GetProcAddress(_glfwLibrary.Libs.winmm, "timeGetTime");
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if (_glfwLibrary.Libs.joyGetDevCapsA &&
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_glfwLibrary.Libs.joyGetPos &&
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_glfwLibrary.Libs.joyGetPosEx &&
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_glfwLibrary.Libs.timeGetTime)
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{
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FreeLibrary(_glfwLibrary.Libs.winmm);
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_glfwLibrary.Libs.winmm = NULL;
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return GL_FALSE;
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}
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}
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else
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return GL_FALSE;
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#endif // _GLFW_NO_DLOAD_WINMM
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return GL_TRUE;
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}
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//========================================================================
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// Unload used libraries (DLLs)
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//========================================================================
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static void freeLibraries(void)
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{
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// gdi32.dll
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#ifndef _GLFW_NO_DLOAD_GDI32
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if (_glfwLibrary.Libs.gdi32 != NULL)
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{
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FreeLibrary(_glfwLibrary.Libs.gdi32);
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_glfwLibrary.Libs.gdi32 = NULL;
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}
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#endif // _GLFW_NO_DLOAD_GDI32
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// winmm.dll
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#ifndef _GLFW_NO_DLOAD_WINMM
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if (_glfwLibrary.Libs.winmm != NULL)
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{
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FreeLibrary(_glfwLibrary.Libs.winmm);
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_glfwLibrary.Libs.winmm = NULL;
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}
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#endif // _GLFW_NO_DLOAD_WINMM
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}
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//========================================================================
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// Terminate GLFW when exiting application
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//========================================================================
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static void glfw_atexit(void)
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{
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glfwTerminate();
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW platform API //////
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//////////////////////////////////////////////////////////////////////////
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//========================================================================
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// Initialize various GLFW state
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//========================================================================
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int _glfwPlatformInit(void)
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{
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OSVERSIONINFO osi;
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// To make SetForegroundWindow() work as we want, we need to fiddle
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// with the FOREGROUNDLOCKTIMEOUT system setting (we do this as early
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// as possible in the hope of still being the foreground process)
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SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT, 0,
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&_glfwLibrary.Sys.foregroundLockTimeout, 0);
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SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0, (LPVOID) 0,
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SPIF_SENDCHANGE);
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// Check which OS version we are running
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osi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx(&osi);
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_glfwLibrary.Sys.winVer = _GLFW_WIN_UNKNOWN;
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if (osi.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
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{
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if (osi.dwMajorVersion == 4 && osi.dwMinorVersion < 10)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_95;
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else if (osi.dwMajorVersion == 4 && osi.dwMinorVersion < 90)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_98;
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else if (osi.dwMajorVersion == 4 && osi.dwMinorVersion == 90)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_ME;
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else if (osi.dwMajorVersion >= 4)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_UNKNOWN_9x;
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}
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else if (osi.dwPlatformId == VER_PLATFORM_WIN32_NT)
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{
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if (osi.dwMajorVersion == 4 && osi.dwMinorVersion == 0)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_NT4;
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else if (osi.dwMajorVersion == 5 && osi.dwMinorVersion == 0)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_2K;
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else if (osi.dwMajorVersion == 5 && osi.dwMinorVersion == 1)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_XP;
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else if (osi.dwMajorVersion == 5 && osi.dwMinorVersion == 2)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_NET_SERVER;
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else if (osi.dwMajorVersion >= 5)
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_glfwLibrary.Sys.winVer = _GLFW_WIN_UNKNOWN_NT;
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}
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// Do we have Unicode support?
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if (_glfwLibrary.Sys.winVer >= _GLFW_WIN_NT4)
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{
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// Windows NT/2000/XP/.NET has Unicode support
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_glfwLibrary.Sys.hasUnicode = GL_TRUE;
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}
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else
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{
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// Windows 9x/ME does not have Unicode support
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_glfwLibrary.Sys.hasUnicode = GL_FALSE;
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}
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// Load libraries (DLLs)
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if (!_glfwInitLibraries())
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return GL_FALSE;
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// With the Borland C++ compiler, we want to disable FPU exceptions
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// (this is recommended for OpenGL applications under Windows)
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#ifdef __BORLANDC__
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_control87(MCW_EM, MCW_EM);
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#endif
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// Retrieve GLFW instance handle
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_glfwLibrary.instance = GetModuleHandle(NULL);
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// System keys are not disabled
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_glfwWin.keyboardHook = NULL;
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// Install atexit() routine
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atexit(glfw_atexit);
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// Start the timer
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_glfwInitTimer();
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return GL_TRUE;
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}
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//========================================================================
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// Close window and shut down library
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//========================================================================
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int _glfwPlatformTerminate(void)
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{
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// Close OpenGL window
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glfwCloseWindow();
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// Enable system keys again (if they were disabled)
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glfwEnable(GLFW_SYSTEM_KEYS);
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// Unload libraries (DLLs)
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_glfwFreeLibraries();
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// Restore FOREGROUNDLOCKTIMEOUT system setting
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SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0,
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(LPVOID) _glfwLibrary.Sys.foregroundLockTimeout,
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SPIF_SENDCHANGE);
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return GL_TRUE;
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}
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