c# Wndproc的使用方法

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protectedoverride voidWndProc(refMessage m)

{

    constint WM_SYSCOMMAND = 0x0112;

    constint SC_CLOSE = 0xF060;

    if(m.Msg == WM_SYSCOMMAND && (int) m.WParam == SC_CLOSE)

    {

        // 屏蔽传入的消息事件

        this.WindowState = FormWindowState.Minimized;

        return;

     }

    base.WndProc(refm);

}

　　

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protectedoverride voidWndProc(ref   Message m)

        {

            constint WM_SYSCOMMAND = 0x0112;

            constint SC_CLOSE = 0xF060;

            constint SC_MINIMIZE = 0xF020;

            if(m.Msg == WM_SYSCOMMAND && ((int)m.WParam == SC_MINIMIZE || (int)m.WParam == SC_CLOSE))

            {

                //最小化到系统栏

               this.Hide();

                return;

            }

            base.WndProc(ref   m);

        }

重写 WndProc函数来同时实现无标题栏的窗体移动和禁止双击窗体最大化

 

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protectedoverride voidWndProc(refMessage m)

         {

             constint WM_NCHITTEST = 0x84;

             constint HTCLIENT = 0x01;

             constint HTCAPTION = 0x02;

             constint WM_SYSCOMMAND = 0x112;

             constint SC_MAXMIZE = 0xF030;

             constint WM_NCLBUTTONDBLCLK = 0xA3;

             switch(m.Msg)

             {

                 case0x4e:

                 case0xd:

                 case0xe:

                 case0x14:

                     base.WndProc(refm);

                     break;

                 caseWM_NCHITTEST://鼠标点任意位置后可以拖动窗体

                      

                    this.DefWndProc(refm);

                     if(m.Result.ToInt32() == HTCLIENT)

                     {

                         m.Result =new IntPtr(HTCAPTION);

                         return;

                     }

                     break;

                 caseWM_NCLBUTTONDBLCLK://禁止双击最大化

                     Console.WriteLine(this.WindowState);

                      

                        return;

  

                    

                    break;

  

                default:

                      

                    base.WndProc(refm);

                     break;

             }

         }