subject_21425.htm

一些关于vc的问答

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序号：21425 发表者：longren 发表日期：2002-11-17 13:06:53
<br>主题：简单的数据传递问题
<br>内容：利用套接字传递数据，增加的代码如下：<BR>发送区：<BR>BOOL CClientDlg::OnInitDialog(){<BR>.....<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_socksend.Create(6800,SOCK_DGRAM,NULL);<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_socksend.Bind(6800,"127.0.0.1");<BR>&nbsp;&nbsp;&nbsp;&nbsp;SetTimer(1,3000,NULL); <BR>}<BR>void CClientDlg::OnTimer(UINT nIDEvent) <BR>{<BR>and/or call default<BR>&nbsp;&nbsp;&nbsp;&nbsp;static iIndex=0;<BR>&nbsp;&nbsp;&nbsp;&nbsp;char szSend[20];<BR>&nbsp;&nbsp;&nbsp;&nbsp;sprintf(szSend,"%010d",iIndex++);<BR>&nbsp;&nbsp;&nbsp;&nbsp;int iSend= m_socksend.SendTo(szSend,10,6801,"127.0.0.1",0);<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_szsend=szSend;<BR>&nbsp;&nbsp;&nbsp;&nbsp;UpdateData(FALSE);<BR>&nbsp;&nbsp;&nbsp;&nbsp;CDialog::OnTimer(nIDEvent);<BR>}<BR>接收区：<BR>BOOL CServerDlg::OnInitDialog(){<BR>.............<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_sockrecv.Create(6801,SOCK_DGRAM,"127.0.0.1");<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_sockrecv.Bind(6801,"127.0.0.1");<BR>&nbsp;&nbsp;&nbsp;&nbsp;SetTimer(1,3000,NULL); <BR>}<BR>void CServerDlg::OnTimer(UINT nIDEvent) <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your message handler code here and/or call default<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;char szRecv[20];<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString szIP("127.0.0.1");<BR>&nbsp;&nbsp;&nbsp;&nbsp;UINT uPort=6800;<BR>&nbsp;&nbsp;&nbsp;&nbsp;int iRecv =m_sockrecv.ReceiveFrom(szRecv,10,szIP,uPort,0);<BR>&nbsp;&nbsp;&nbsp;&nbsp;TRACE("received %d byte\n",iRecv);<BR>&nbsp;&nbsp;&nbsp;&nbsp;szRecv[iRecv]='\0';<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_szrecv=szRecv;<BR>&nbsp;&nbsp;&nbsp;&nbsp;UpdateData(FALSE);<BR>&nbsp;&nbsp;&nbsp;&nbsp;CDialog::OnTimer(nIDEvent);<BR>}<BR>现在的问题是执行后，产生的是0000000000慢慢的一个个增加，我想要我输入数，不是它产生的数。<BR>我用了CEdit* pedit=(CEdit*)getdlgitem(IDC_EDIT1);<BR>pidit-&gt;setfocus()<BR>还是产生的原来的数。怎么搞啊。
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<font color=red>答案被接受</font><br>回复者：未出手的飞刀 回复日期：2002-11-17 15:09:47
<br>内容：发送区：<BR>void CClientDlg::OnTimer(UINT nIDEvent) <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;CEdit* pedit;<BR>&nbsp;&nbsp;&nbsp;&nbsp;TCHAR szSend[50];<BR>&nbsp;&nbsp;&nbsp;&nbsp;int iSend;<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;pedit=(CEdit*)GetDlgItem(IDC_EDIT1);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pedit-&gt;GetWindowText(szSend,50);<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_socksend.SendTo(szSend,strlen(szSend),6801,"127.0.0.1",0);<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;m_szsend=szSend;<BR>&nbsp;&nbsp;&nbsp;&nbsp;UpdateData(FALSE);<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;CDialog::OnTimer(nIDEvent);<BR>}<BR>
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