c#实现随鼠标移动窗体_.NET_编程开发_程序员俱乐部

class="dp-c" style="font: 12px/26px Consolas, 'Courier New', Courier, mono, serif; list-style: decimal; margin: 0px 0px 1px 45px !important; padding: 0px; border: currentColor; text-align: left; color: #5c5c5c; text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; font-size-adjust: none; font-stretch: normal; background-color: #ffffff; -webkit-text-stroke-width: 0px;" start="1">
1. private void MainForm_Load(object sender, EventArgs e)  
2. {  
3.     //绑定事件  
4.     MouseMove += Form_MouseMove;  
5.     MouseDown += Form_MouseDown;  
6. }  
7. private Point _mousePoint;  
8. private void Form_MouseMove(object sender, MouseEventArgs e)  
9. {  
10.     if (e.Button == MouseButtons.Left)  
11.     {  
12.         Top = MousePosition.Y - _mousePoint.Y;  
13.         Left = MousePosition.X - _mousePoint.X;  
14.     }  
15. }  
16. private void Form_MouseDown(object sender, MouseEventArgs e)  
17. {  
18.     if (e.Button == MouseButtons.Left)  
19.     {  
20.         _mousePoint.X = e.X;  
21.         _mousePoint.Y = e.Y;  
22.     }  
23. }  

如果窗体有标题 
Top -= SystemInformation.CaptionHeight;

如果有边框 
Top -= SystemInformation.FormBorderSize.Height
Left -= SystemInformation.FormBorderSize.Width