c# 拖动无标题栏窗体代碼(轉)

using  System.Runtime.InteropServices;

[DllImport( " user32.dll " )]
     public   static   extern   bool  ReleaseCapture();
    [DllImport( " user32.dll " )]
     public   static   extern   bool  SendMessage(IntPtr hwnd,  int  wMsg,  int  wParam,  int  lParam);
     public   const   int  WM_SYSCOMMAND  =   0x0112 ;
     public   const   int  SC_MOVE  =   0xF010 ;
     public   const   int  HTCAPTION  =   0x0002 ;

MouseDown事件中加入如下代码:

private   void  Form1_MouseDown( object  sender, System.Windows.Forms.MouseEventArgs e)
  {
   ReleaseCapture();
   SendMessage( this .Handle, WM_SYSCOMMAND, SC_MOVE  +  HTCAPTION,  0 );
  }

轉自：http://www.cnblogs.com/tuyile006/archive/2006/10/22/536468.html