C#关闭显示屏，使显示屏处于待机状态 

 1 class Program
 2 {
 3 private const uint WM_SYSCOMMAND = 0x112; //系统消息
 4 private const int SC_MONITORPOWER = 0xF170; //关闭显示器的系统命令
 5 private const int MonitorPowerOff = 2; //2为PowerOff, 1为省电状态，-1为开机
 6 private static readonly IntPtr HWND_BROADCAST = new IntPtr(0xffff);//广播消息，所有顶级窗体都会接收
 7 
 8 [DllImport("user32.dll")]
 9 private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
10 static void Main(string[] args)
11 {
12 SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, MonitorPowerOff);
13 }
14 
15 }

 

posted @ 2015-08-06 17:08  五好青年，勇往直前  阅读(529)  评论(0)  编辑  收藏  举报