#include <stdlib.h>
#include <windows.h>
+/* These definitions are missing from windows.h */
+WINGDIAPI int WINAPI wglChoosePixelFormat(HDC, PIXELFORMATDESCRIPTOR *);
+WINGDIAPI int WINAPI wglDescribePixelFormat(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);
+WINGDIAPI int WINAPI wglGetPixelFormat(HDC);
+WINGDIAPI BOOL WINAPI wglSetPixelFormat(HDC, int, PIXELFORMATDESCRIPTOR *);
+WINGDIAPI BOOL WINAPI wglSwapBuffers(HDC);
+
/* Type definitions (conversions) */
typedef int Visual; /* Win32 equivalent of X11 type */
typedef HWND Window;