我在做一个定时的软件（C#），现在到了时间它会自动执行一个程序，但是屏幕却还是关闭的状态下，请问怎么开启屏幕呢，谢谢大家！最好能给源码，我百度谷歌找了好久没找到。
------解决方案--------------------
- C# code
public enum PowerState//电池状态 { PwrDeviceUnspecified = -1, FullOn = 0, LowOn = 1, Standby = 2, Sleep = 3, Off = 4, PwrDeviceMaximum = 5 } [DllImport("CoreDll", SetLastError = true)] static extern IntPtr SetPowerRequirement(string DeviceName, PowerState State, uint dwDeviceFlags, string Name, ulong Reserved); [DllImport("CoreDll", SetLastError = true)] static extern int ReleasePowerRequirement(IntPtr hPowerReq); [DllImport("coredll.dll")] private static extern int DevicePowerNotify(string device, PowerState deviceState, int deviceFlags);DevicePowerNotify("BKL1:", PowerState.FullOn, 1);//开背景灯DevicePowerNotify("BKL1:", PowerState.Off, 1);//关背景灯