1 // 洪星 ‎2006‎年‎11‎月‎14‎日
 2 // www.hongcing.com 
 3 // QQ 219402
 4 
 5 // 窗体的屏幕坐标
 6 Point formPoint;
 7 
 8 // 鼠标光标的屏幕坐标
 9 Point mousePoint;
10 
11 // 获取窗体的屏幕坐标和鼠标光标的位置（屏幕坐标）
12 private void MainForm_MouseDown(object sender, MouseEventArgs e)
13 {
14     formPoint = this.Location;
15     mousePoint = Control.MousePosition;
16 }
17 
18 // 响应鼠标移动，并移动窗口
19 private void MainForm_MouseMove(object sender, MouseEventArgs e)
20 {
21     if (Control.MouseButtons == MouseButtons.Left)
22     {
23         Point mousePos = Control.MousePosition;
24         this.Location = this.formPoint + (Size)mousePos - (Size)this.mousePoint;
25     }
26 }