按鈕拖拽移動

世紀緣發表於2016-11-03
原文網址 : https://blog.csdn.net/qingheshijiyuan/article/details/53018944
      private void button1_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                Button btn = (Button)sender;
                btn.Location = new Point(PointToClient(MousePosition).X - 30, PointToClient(MousePosition).Y - 30);
            }
        }

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