public static extern Status XGetScreenSaver(IntPtr display, ref int timeout_return, ref int interval_return, ref ScreenSaverBlanking prefer_blanking_return, ref ScreenSaverExposures allow_exposures_return);
public static extern Status XSetScreenSaver(IntPtr display, int timeout, int interval, ScreenSaverBlanking prefer_blanking, ScreenSaverExposures allow_exposures);