nbsp;         file://绑定到本地一个端口上
          sockaddr_in localaddr;
          localaddr.sin_family = AF_INET;
          localaddr.sin_port = htons(8888);  file://端口号不要与其他应用程序冲突
          localaddr.sin_addr.s_addr = 0;
         if(bind(ServerSock ,(struct sockaddr*)&localaddr,sizeof(sockaddr))
                                          = = SOCKET_ERROR)
         {
               MessageBox("绑定地址失败!");
               closesocket(ServerSock);
               WSACleanup();
               return FALSE;
         }

         file://将SeverSock设置为异步非阻塞模式，并为它注册各种网络异步事件，其 中   m_hWnd       
         file://为应用程序的主对话框或主窗口的句柄
        if(WSAAsyncSelect(ServerSock, m_hWnd, NETWORK_EVENT,
              FD_ACCEPT | FD_CLOSE | FD_READ | FD_WRITE) == SOCKET_ERROR)
         {
               MessageBox("注册网络异步事件失败!");
               WSACleanup();
               return FALSE;
         }
         listen(ServerSock, 5); file://设置侦听模式
        return TRUE;
     }

     下面定义网络异步事件的回调函数
     void CSocketSeverDlg::OnNetEvent(WPARAM wParam, LPARAM lParam)
     {
        file://调用Winsock API函数，得到网络事件类型
        int iEvent = WSAGETSELECTEVENT(lParam);