鼠标拖动窗体功能

 1         static int cx = 0;
 2         static int cy = 0;
 3         static bool move = false;
 4 
 5         private void label1_MouseDown(object sender, MouseEventArgs e)
 6         {
 7             cx = e.X;
 8             cy = e.Y;
 9             move = true;
10         }
11         private void label1_MouseMove(object sender, MouseEventArgs e)
12         {
13             if (move)
14             {
15 
16                 this.Left += e.X - cx;
17                 this.Top += e.Y - cy;
18             }
19         }
20 
21         private void label1_MouseUp(object sender, MouseEventArgs e)
22         {
23             move = false;
24         }
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原文地址：https://www.cnblogs.com/ensleep/p/2543835.html