winform拖动无边框窗体

去掉form的窗体的边框后无法拖动窗体，下面简单的代码即可实现；

如何去掉边框详见：http://www.cnblogs.com/lgx040605112/archive/2012/10/08/2715438.html

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 
 9 namespace WindowsApplication1
10 {
11     public partial class Form1 : Form
12     {
13         public Form1()
14         {
15             InitializeComponent();
16         }
17 
18         private Point mPoint = new Point();
19 
20         private void Form1_MouseDown(object sender, MouseEventArgs e)
21         {
22             mPoint.X = e.X;
23             mPoint.Y = e.Y;
24         }
25 
26         private void Form1_MouseMove(object sender, MouseEventArgs e)
27         {
28             if (e.Button == MouseButtons.Left)
29             {
30                 Point myPosittion = MousePosition;
31                 myPosittion.Offset(-mPoint.X, -mPoint.Y);
32                 Location = myPosittion;
33             } 
34         }
35     }
36 }

另外一种实现方式：

View Code

 1     public partial class NoBorderForm : Form
 2     {
 3         /// <summary>
 4         /// 鼠标是否按下
 5         /// </summary>
 6         private bool mouseDown = false;
 7         
 8         /// <summary>
 9         /// 初始移动位置
10         /// </summary>
11         private Point movePoint;
12         
13         public NoBorderForm()
14         {
15             InitializeComponent();
16 
17             MouseDown += new MouseEventHandler(NoBorderForm_MouseDown); 
18             MouseMove += new MouseEventHandler(NoBorderForm_MouseMove);
19             MouseUp += new MouseEventHandler(NoBorderForm_MouseUp);
20         }
21 
22         void NoBorderForm_MouseUp(object sender, MouseEventArgs e)
23         {
24             if (mouseDown)
25             {
26                 mouseDown = false;
27             }
28         }
29 
30         void NoBorderForm_MouseMove(object sender, MouseEventArgs e)
31         {
32             if (mouseDown) 
33             {
34                 Point curPoint = Cursor.Position;
35                 //Point curPoint = MousePosition;
36                 int x = curPoint.X - movePoint.X;
37                 int y = curPoint.Y - movePoint.Y;
38                 movePoint = curPoint;
39                 Location = new Point(Location.X + x, Location.Y + y);
40             }
41         }
42 
43         void NoBorderForm_MouseDown(object sender, MouseEventArgs e)
44         {
45             if (e.Button == MouseButtons.Left)
46             {
47                 mouseDown = true;
48                 movePoint = Cursor.Position;
49                 //movePoint = MousePosition;
50             }
51         }
52     }