LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg,
WPARAM wParam, LPARAM lParam );
GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,
LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg,
WPARAM wParam, LPARAM lParam );
GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,