static bool moniter_state = true;
const int HWND_BROADCAST = 0xFFFF;
const int SC_MONITORPOWER = 0xF170;
const short WM_SYSCOMMAND = 0x0112;
[DllImport("user32.dll")]
static extern int SendMessage(int hWnd, short Msg, int wParam, int lParam);
private void button1_Click(object sender, EventArgs e)
{
// 모니터가 켜져있다면... 끈다
if (moniter_state)
{
moniter_state = !moniter_state;
button1.Text = "모니터 켜기";
SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, 2);
}
else
{
moniter_state = !moniter_state;
button1.Text = "모니터 끄기";
SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, -1);
}
}