学步园

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