关于窗体的拖动

public   partial   class   frmMove   :   Form { public   frmMove() { InitializeComponent(); } internal   static   int   WM_NCHITTEST   =   0x84;   //移动鼠标，按住或释放鼠标时发生的系统消息 internal   static   IntPtr   HTCLIENT   =   (IntPtr)0x1;//工作区 internal   static   IntPtr   HTCAPTION   =   (IntPtr)0x2;   //标题栏 protected   override   void   WndProc(ref   Message   m) { if   (m.Msg   ==   WM_NCHITTEST) { base.WndProc(ref   m); if   (m.Result   ==   HTCLIENT) { m.HWnd   =   this.Handle; System.Drawing.Rectangle   rect   =   this.RectangleToScreen(this.ClientRectangle); Point   C_Pos   =   Cursor.Position; m.Result   =   HTCAPTION;//模拟标题栏,移动或双击可以最大或最小化窗体 } } else { base.WndProc(ref   m); } } }