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C#实现Winform无边框移动的方法

本文实例讲述了C#实现Winform无边框移动的方法。分享给大家供大家参考。具体如下:

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const int HTLEFT = 10;

const int HTRIGHT = 11;

const int HTTOP = 12;

const int HTTOPLEFT = 13;

const int HTTOPRIGHT = 14;

const int HTBOTTOM = 15;

const int HTBOTTOMLEFT = 0x10;

const int HTBOTTOMRIGHT = 17;

protected override void WndProc( ref Message m)

{

  switch (m.Msg)

  {

   case 0x0084:

    base .WndProc( ref m);

    Point vPoint = new Point(( int )m.LParam & 0xFFFF,

     ( int )m.LParam >> 16 & 0xFFFF);

    vPoint = PointToClient(vPoint);

    if (vPoint.X <= 5)

     if (vPoint.Y <= 5)

      m.Result = (IntPtr)HTTOPLEFT;

     else if (vPoint.Y >= ClientSize.Height - 5)

      m.Result = (IntPtr)HTBOTTOMLEFT;

     else m.Result = (IntPtr)HTLEFT;

    else if (vPoint.X >= ClientSize.Width - 5)

     if (vPoint.Y <= 5)

      m.Result = (IntPtr)HTTOPRIGHT;

     else if (vPoint.Y >= ClientSize.Height - 5)

      m.Result = (IntPtr)HTBOTTOMRIGHT;

     else m.Result = (IntPtr)HTRIGHT;

    else if (vPoint.Y <= 5)

     m.Result = (IntPtr)HTTOP;

    else if (vPoint.Y >= ClientSize.Height - 5)

     m.Result = (IntPtr)HTBOTTOM;

    break ;

   case 0x0201: //鼠标左键按下的消息

    m.Msg = 0x00A1; //更改消息为非客户区按下鼠标

    m.LParam = IntPtr.Zero; //默认值

    m.WParam = new IntPtr(2); //鼠标放在标题栏内

    base .WndProc( ref m);

    break ;

   default :

    base .WndProc( ref m);

    break ;

  }

}

希望本文所述对大家的C#程序设计有所帮助。

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