关闭显示器:
SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 0);
打开显示器:
SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, -1);
SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 0);
打开显示器:
SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, -1);