C# 實現視窗無邊框，可拖動效果

        #region 無邊框拖動效果
        [DllImport("user32.dll")]//拖動無窗體的控制項
        public static extern bool ReleaseCapture();
        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_MOVE = 0xF010;
        public const int HTCAPTION = 0x0002;
        
        private void Start_MouseDown(object sender, MouseEventArgs e)
        {
            //拖動窗體
            ReleaseCapture();
            SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
        }
        #endregion

在視窗屬性界面添加事件服務