求助如何将下列的程序改进,使其自动回复?
这是其中一段程序 想在另一端的程序在接受到数据后 不用人工输入数据 可以自动回复相应的信息。谢谢
void CChatDlg::OnSock(WPARAM wParam,LPARAM lParam){ switch(LOWORD(lParam)) { case FD_READ: WSABUF wsabuf; wsabuf.buf=new char[200]; wsabuf.len=200; DWORD dwRead; DWORD dwFlag=0; SOCKADDR_IN addrFrom; int len=sizeof(SOCKADDR); CString str; CString strTemp; HOSTENT *pHost; if(SOCKET_ERROR==WSARecvFrom(m_socket,&wsabuf,1,&dwRead,&dwFlag, (SOCKADDR*)&addrFrom,&len,NULL,NULL)) { MessageBox("接收数据失败！"); return; } pHost=gethostbyaddr((char*)&addrFrom.sin_addr.S_un.S_addr,4,AF_INET); //str.Format("%s说 :%s",inet_ntoa(addrFrom.sin_addr),wsabuf.buf); str.Format("%s说 :%s",pHost->h_name,wsabuf.buf); str+="\r\n"; GetDlgItemText(IDC_EDIT_RECV,strTemp); str+=strTemp; SetDlgItemText(IDC_EDIT_RECV,str); break; }}void CChatDlg::OnBtnSend() { // TODO: Add your control notification handler code here DWORD dwIP; CString strSend; WSABUF wsabuf; DWORD dwSend; int len; CString strHostName; SOCKADDR_IN addrTo; HOSTENT* pHost; if(GetDlgItemText(IDC_EDIT_HOSTNAME,strHostName),strHostName=="") { ((CIPAddressCtrl*)GetDlgItem(IDC_IPADDRESS1))->GetAddress(dwIP); addrTo.sin_addr.S_un.S_addr=htonl(dwIP); } else { pHost=gethostbyname(strHostName); addrTo.sin_addr.S_un.S_addr=*((DWORD*)pHost->h_addr_list[0]); } addrTo.sin_family=AF_INET; addrTo.sin_port=htons(6000); GetDlgItemText(IDC_EDIT_SEND,strSend); len=strSend.GetLength(); wsabuf.buf=strSend.GetBuffer(len); wsabuf.len=len+1; SetDlgItemText(IDC_EDIT_SEND,""); if(SOCKET_ERROR==WSASendTo(m_socket,&wsabuf,1,&dwSend,0, (SOCKADDR*)&addrTo,sizeof(SOCKADDR),NULL,NULL)) { MessageBox("发送数据失败！"); return; } }