如何通過鼠標控制無標頭窗體

這個問題也是來自論壇提問，同樣是.Net WinForm新手的問題，這樣的問題如果在Deplphi這樣的板塊立刻就被秒殺了,可是.Net版知道的人好像不太多。

介紹兩個方法，一個是發送SC_Move消息，一個是改變鼠標區域消息

方法一：

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.using  System.Runtime.InteropServices;
9.namespace  WindowsApplication1
10.{
11.     public  partial  class  Form1 : Form
12.    {
13.         public  Form1()
14.        {
15.            InitializeComponent();
16.        }
17.        [DllImport( "user32.dll" , EntryPoint =  "SendMessage" )]
18.         public   static   extern   int  SendMessage( int  hWnd,  int  wMsg,  int  wParam,  int  lParam);
19.        [DllImport( "user32.dll" , EntryPoint =  "ReleaseCapture" )]
20.         public   static   extern   int  ReleaseCapture();
21.         public   const   int  WM_SysCommand = 0x0112;
22.         public   const   int  SC_MOVE = 0xF012;
23.
24.
25.         private   void  Form1_MouseDown( object  sender, MouseEventArgs e)
26.        {
27.            ReleaseCapture();
28.            SendMessage( this .Handle.ToInt32(), WM_SysCommand, SC_MOVE, 0);
29.        }
30.
31.         private   void  Form1_Load( object  sender, EventArgs e)
32.        {
33.
34.        }
35.    }
36.}

方法二：

1.using  System;
2.using  System.Windows.Forms;
3.namespace  WindowsApplication1
4.{
5.     public  partial  class  Form1 : Form
6.    {
7.         public  Form1()
8.        {
9.            InitializeComponent();
10.        }
11.
12.         protected   override   void  WndProc( ref  Message m)
13.        {
14.             base .WndProc( ref  m);  if  (m.Msg == 0x84)
15.            {
16.                 switch  (m.Result.ToInt32())
17.                {
18.                     case  1:
19.
20.                        m.Result =  new  IntPtr(2);  break ;
21.                }
22.            }
23.        }
24.    }
25.}