打开和关闭显示器

Question

我想要关闭显示器，并在一段时间后将其打开。但是显示器不想打开。我怎么了？

HWND hwnd_monitor = FindWindow(0, 0);
SendMessage(hwnd_monitor, WM_SYSCOMMAND, SC_MONITORPOWER, 2);
Sleep(1000);
SendMessage(hwnd_monitor, WM_SYSCOMMAND, SC_MONITORPOWER, -1);

Answer 1

您可以尝试移动鼠标，这将唤醒显示器。 以下是链接中提供的解决方案：http://stackoverflow.com/questions/12572441/sendmessage-sc-monitorpower-wont-turn-monitor-on-when-running-windows-8

[DllImport("user32.dll")]
static extern void mouse_event(Int32 dwFlags, Int32 dx, Int32 dy, Int32 dwData, UIntPtr dwExtraInfo);

private const int MOUSEEVENTF_MOVE = 0x0001;

private void Wake(){
    mouse_event(MOUSEEVENTF_MOVE, 0, 1, 0, UIntPtr.Zero);
    Sleep(40);
    mouse_event(MOUSEEVENTF_MOVE, 0, -1, 0, UIntPtr.Zero);
}