求关闭笔记本显示器的代码

Question

如题

Answer 1

using System.Runtime.InteropServices;[DllImport("User32.DLL")]
public static extern int SendMessage(IntPtr hWnd,
    uint Msg, int wParam, int lParam);
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_MONITORPOWER = 61808;
private void button1_Click(object sender, EventArgs e)
{
    SendMessage(Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 1);
}

Answer 2

[DllImport( "user32.dll" )]
        public static extern IntPtr SendMessage (
            IntPtr hWnd,
            uint msg,
            uint wParam,
            int lParam );        private const uint WM_SYSCOMMAND = 0x0112;
        private const uint SC_MONITORPOWER = 0xF170;
调用方法
    SendMessage(
                  this.Handle,
                  WM_SYSCOMMAND,
                  SC_MONITORPOWER,
                  2
               );  //关闭显示器
    SendMessage(
                this.Handle,
                WM_SYSCOMMAND,
                SC_MONITORPOWER,
                -1
               );  //打开显示器