//查找网页源码，这段代码也可以作为获取外网IP，不过获取外网IP只需要前面一部分就行了，把网页源码读到缓冲区就行了 CString SiteInfo,SiteName=”http://www.ip138.com/ip2city.asp“; CInternetSession mySession(NULL,0); CHttpFile *myHttpFile=NULL; CString myData; myHttpFile=(CHttpFile *)mySession.OpenURL(SiteName); while(myHttpFile->ReadString(myData)) {  SiteInfo=SiteInfo+”\r\n”;  SiteInfo+=myData; } myHttpFile->Close(); mySession.Close();//前面是获取网页源代码/* CFile file; file.Open(“file.tmp”,CFile::modeRead); CString data; while(file.ReadHuge(data.GetBuffer(1024),1024)) {     CString yourIP(“您的IP地址是：”);  CString end(“
”);  int index=data.Find(yourIP);  if(index!=-1)  {   int length=data.Find(end)-index;   GetDlgItem(IDC_EDIT1)->SetWindowText(data.Mid(index,length));   GetDlgItem(IDC_EDIT2)->SetWindowText(“获取完毕”);   break;  }  data.ReleaseBuffer(1024); } file.Close();//前面是在网页代码中查找IP*/