Winform隐藏标题栏后实现窗口移动

#region 隐藏标题栏后移动窗口
         /// <summary>
         /// 鼠标按下，开启移动
         /// </summary>
         /// <param name="e"></param>
         protected override void OnMouseDown(MouseEventArgs e)
         {
             base.OnMouseDown(e);
             m_mousePos = Cursor.Position;
             m_isMouseDown = true;
         }
 
         /// <summary>
         /// 鼠标抬起，关闭移动
         /// </summary>
         /// <param name="e"></param>
         protected override void OnMouseUp(MouseEventArgs e)
         {
             base.OnMouseUp(e);
             m_isMouseDown = false;
             this.Focus();
         }
 
         /// <summary>
         /// 移动窗口
         /// </summary>
         /// <param name="e"></param>
         protected override void OnMouseMove(MouseEventArgs e)
         {
             base.OnMouseMove(e);
             if (m_isMouseDown)
             {
                 Point tempPos = Cursor.Position;
                 this.Location = new Point(Location.X + (tempPos.X - m_mousePos.X), Location.Y + (tempPos.Y - m_mousePos.Y));
                 m_mousePos = Cursor.Position;
             }
 
         }
         #endregion