C++多功能聊天室，网上找的代码，发送文件没问题，但是点击接收文件时就卡住了，希望大家帮我看看问题，下面是接收文件的代码

weixin_37959519 2017-04-18 12:11:20

UINT RecvFunc( LPVOID pParam )

{

	CString strIP;

	CString strPort;

	CSendFileDlg * dlg=(CSendFileDlg *)pParam;



	(dlg->GetDlgItem(IDC_BUTTON_RECEIVE))->EnableWindow(FALSE);//？？？

	dlg->GetDlgItemText(IDC_IPADDRESS1, strIP);//??????

	dlg->GetDlgItemText(IDC_PORT1, strPort);

	dlg->cliSock.Create();



	

	if(!dlg->cliSock.Connect((LPCTSTR)strIP,6000))//建立连接

	{

		AfxMessageBox("连接失败 !");

		dlg->cliSock.Close();

		(dlg->GetDlgItem(IDC_BUTTON_RECEIVE))->EnableWindow(TRUE);

		dlg=NULL;

		theRecv=NULL;

		return -1;

	}

	

	SOCKET_STREAM_FILE_INFO StreamFileInfo1;

	dlg->cliSock.Receive(&StreamFileInfo1,sizeof(SOCKET_STREAM_FILE_INFO));



	CFile myFile;

	myFile.Open(StreamFileInfo1.szFileTitle, CFile::modeCreate | CFile::modeWrite | CFile::typeBinary);//打开或创建文件

    AfxMessageBox(StreamFileInfo1.szFileTitle);

	UINT nSize=0;

	UINT nData=0;

	

	while (nSize < StreamFileInfo1.nFileSizeLow)

	{

		//byte * szBuf=new byte[1024];

		char * szBuf=new char[1024];

		nData=dlg->cliSock.Receive(szBuf, 1024);

		myFile.Write(szBuf, nData);//将内容写到文件中

		nSize+=nData;

	}

	SetFileTime((HANDLE)myFile.m_hFile,&StreamFileInfo1.ftCreationTime,

                &StreamFileInfo1.ftLastAccessTime,&StreamFileInfo1.ftLastWriteTime);

	myFile.Close();

	SetFileAttributes(StreamFileInfo1.szFileTitle,StreamFileInfo1.dwFileAttributes);

	dlg->cliSock.Close();

	AfxMessageBox("接收完毕！");

	(dlg->GetDlgItem(IDC_BUTTON_RECEIVE))->EnableWindow(TRUE);

    

	theRecv=NULL;//？？

	dlg=NULL;	

	return 0;

}