使用WM_SYSCOMMAND SC_MONITORPOWER控制显示器的打开、关闭和低功耗

const enum MonitorPowerCmd { MonitroPowerOn = -1, //打开显示器 MonitorGoLowPower = 1, //进入低电量 MonitorPowerOff = 2, //关闭显示器 }; MonitorPowerCmd Cmd = MonitorPowerOff; ::PostMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM)Cmd);

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