c# 多种方法调整屏幕亮度

时间：2023-03-09 03:31:06
c# 多种方法调整屏幕亮度

Github: https://github.com/CHNMaxGor/AjustScreenBrightness

方法一: 使用网上常说的 Gdi32.dll 下的 SetDeviceGammaRamp (修改系统Gamma)

DllImport("gdi32.dll")]

public static extern bool GetDeviceGammaRamp(IntPtr hDC, ref RAMP lpRamp);
[DllImport("gdi32.dll")]

public static extern bool SetDeviceGammaRamp(IntPtr hDC, ref RAMP lpRamp);

方法二: 使用MSDN上的 dxva2.dll SetMonitorBrightness

 [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("dxva2.dll")]

 public static extern bool DestroyPhysicalMonitors(uint dwPhysicalMonitorArraySize,

                 [Out] PhysicalMonitor[] pPhysicalMonitorArray);

 [DllImport("dxva2.dll")]

 public static extern bool GetMonitorTechnologyType(IntPtr hMonitor,

                 ref McDisplayTechnologyType pdtyDisplayTechnologyType);

 [DllImport("dxva2.dll")]

 public static extern bool GetMonitorCapabilities(IntPtr hMonitor, ref uint pdwMonitorCapabilities,

                 ref uint pdwSupportedColorTemperatures);

 [DllImport("dxva2.dll")]

 public static extern bool SetMonitorBrightness(IntPtr hMonitor, short brightness);

 [DllImport("dxva2.dll")]

 public static extern bool SetMonitorContrast(IntPtr hMonitor, short contrast);

 [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 GetMonitorContrast(IntPtr hMonitor, ref short pwdMinimumContrast,

                 ref short pwdCurrentContrast, ref short pwdMaximumContrast);

方法三: 使用 C:\Windows\System32\DriverStore\FileRepository\igdlh64.inf_amd64_neutral_3daeca3838e011e0\igfxDHLib.dll (这是驱动的文件,不同机器有自己对应的驱动文件)

DataHandlerClass _cls = new DataHandlerClass();

_CUI_COLOR_DEVICES _screenModel = default(_CUI_COLOR_DEVICES);

public AjustScreenByIgfxDHLib()

{

    CUI_SUPPORTED_CONFIG cui_SUPPORTED_CONFIG = default(CUI_SUPPORTED_CONFIG);

    uint num = _cls.get_SupportedConfig(ref cui_SUPPORTED_CONFIG);

    var id = cui_SUPPORTED_CONFIG.DeviceConfig[0].DispDev[0];

    uint[] array = new uint[3];

    var a = _cls.get_GetDeviceList(id, array);

    _screenModel.ulDevices = array[0];

    _screenModel.Device = new _CUI_COLOR_INFO[3];

    _screenModel.Device[0].Brightness.color = _COLOR_TYPE.NumColors;

    _screenModel.Device[0].Contrast.color = _COLOR_TYPE.NumColors;

    _screenModel.Device[0].Gamma.color = _COLOR_TYPE.NumColors;

    _screenModel.Command = _CUI_COLOR_COMMAND.GET_COLOR;

    _cls.get_color(_screenModel.ulDevices, ref _screenModel);

}

　　

注意事项 该方法使用时请注意好参数的范围,比如说把对比度设置太低时屏幕会完全黑掉 什么都看不到,然后你就不能直接把对比度调回来了.

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