设置设备背光强度
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void SetBacklight(int value)
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{
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RegistryKey HKEY = Registry.CurrentUser.OpenSubKey("ControlPanel\\Backlight", true);
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if (HKEY != null)
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{
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HKEY.SetValue("ACBrightNess", value, RegistryValueKind.DWord); //AC电源 "BrightNess" 为电池供电状态下
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IntPtr hBackLightEvent = OpenNETCF.Threading.NativeMethods.CreateEvent(IntPtr.Zero, false, true, "BackLightChangeEvent");
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if (hBackLightEvent != IntPtr.Zero)
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{
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OpenNETCF.Threading.NativeMethods.EventModify(hBackLightEvent, OpenNETCF.Threading.NativeMethods.EVENT.SET);
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OpenNETCF.Threading.NativeMethods.CloseHandle(hBackLightEvent);
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}
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}
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}
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没有smartphone设备,所以只知道在PPC上没有问题,值的范围是 0~10,不过我试验的时候发现0不行,系统自带可以设到0,非常奇怪
另:使用了OPENNETCF 中的两个文件NativeMethods.cs ,Registry.cs