【C#每日一帖】【响应节能号召】关闭显示器

利用C#编程，关闭显示器，在VS2005 +Windows XP下测试成功！

        #region 关闭显示器
        public const uint WM_SYSCOMMAND = 0x0112;
        public const uint SC_MONITORPOWER = 0xF170;
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern IntPtr SendMessage(IntPtr hWnd, uint wMsg, uint wParam, int lParam);
        public void CloseLCD(object sender, EventArgs e)
        {
            SendMessage(this.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 2);    // 2 为关闭显示器， －1则打开显示器 
        }
        #endregion

// 调用关闭显示器命令        

private void btnCloseDisplayer_Click(object sender, EventArgs e)
        {
            CloseLCD(sender, e);//关闭显示器
        }