SET Display Monitor Light

 

        [DllImport("dxva2.dll")]
        public static extern bool SetMonitorBrightness(IntPtr hMonitor, short brightness);

        [DllImport("dxva2.dll")]
        public static extern bool GetMonitorBrightness(IntPtr hMonitor, ref short pdwMinimumBrightness,
            ref short pdwCurrentBrightness, ref short pdwMaximumBrightness);

        [DllImport("dxva2.dll")]
        public static extern bool GetNumberOfPhysicalMonitorsFromHMONITOR(IntPtr hMonitor,
            ref uint pdwNumberOfPhysicalMonitors);

        [DllImport("dxva2.dll")]
        public static extern bool GetPhysicalMonitorsFromHMONITOR(IntPtr hMonitor,
            uint dwPhysicalMonitorArraySize, [Out] PhysicalMonitor[] pPhysicalMonitorArray);

        [DllImport("user32.dll")]
        public static extern IntPtr MonitorFromWindow([In] IntPtr hwnd, uint dwFlags);