WinForm可拖动的窗体

 1 //全局
 2 
 3 private  int sx = 0;
 4 private  int sy = 0;
 5 
 6  
 7 
 8 //窗体事件
 9 
10 private void PlayerForm_MouseDown(object sender, MouseEventArgs e)
11 {
12         this.sx = e.X;
13         this.sy = e.Y;
14 }
15 
16 private void PlayerForm_MouseMove(object sender, MouseEventArgs e)
17 {
18         int dx = e.X - sx;
19         int dy = e.Y - sy;
20 
21         if (e.Button == MouseButtons.Left)
22         {
23             this.Left += dx;
24             this.Top += dy;
25         }
26 }