Non-zero if the game mode string last specified to glutGameModeString is a possible game mode configuration; zero otherwise. Being "possible" does not guarantee that if game mode is entered with glutEnterGameMode that the display settings will actually changed. GLUT_GAME_MODE_DISPLAY_CHANGED should be called once game mode is entered to determine if the display mode is actually changed.
Glut Class | Tao.FreeGlut Namespace