實現視窗移動

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#region 實現視窗移動        private bool m_isMouseDown = false;        private Point m_mousePos = new Point();        protected override void OnMouseDown(MouseEventArgs e)        {            base.OnMouseDown(e);            m_mousePos = Cursor.Position;            m_isMouseDown = true;        }        protected override void OnMouseUp(MouseEventArgs e)        {            base.OnMouseUp(e);            m_isMouseDown = false;        }        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