void CTCPdlg::OnEvent(WPARAM wParam,LPARAM lParam)
{   
	switch(lParam)
	{ 
	case FD_ACCEPT:  
		{
		  if(!m_bConnected)       //如未連接
		  {
		     sockListen.Accept(m_tcpsock);
			 m_bConnected=TRUE;
			 m_state="連接";
		  }
		  break;
		}
	case FD_READ:        //欲接收讀準備好的通知
		{
		 char szRecv[50];
		 CString rstr;
		 int iRecv=m_tcpsock.Receive(szRecv,40,0);    //接收TCP數據
         TRACE("received %d byte\n",iRecv);
		 if(iRecv>=0)
		 {
		   szRecv[iRecv]='\0';
		   rstr=szRecv;
		   m_state="收到數據";
		   m_list.AddString(rstr);   //在列表框中加入接收到的字符串
		 }
		 break;
		}
	case FD_CLOSE:
		if(m_WorkType==0)
			m_state="客戶端斷開";
		if(m_WorkType==1)
            m_state="服務器端停止服務";
		    m_bConnected=FALSE;
			m_tcpsock.Close();  //關閉socket
			break;
	} 
        UpdateData(FALSE);
}

#include <winsock.h>
#pragma comment(lib,"wsock32.lib")
#pragma message("Automatically linking with wsock32.dll")