程序内部读取网络信息, 该代码可以通过网络提交验证密码再进行判断... 

CInternetSession mySession(NULL,0);
 CHttpFile* myHttpFile=NULL;

 CString myData;
 CString myUrl;
 myUrl = "; + m_myName + "&password=" + m_myPassword;
 myHttpFile=(CHttpFile*)mySession.OpenURL(myUrl);
 while(myHttpFile->ReadString(myData))
 {
             m_SiteInfo = myData;
 }
 
 if( m_SiteInfo == "hao" ){
         CDialog::OnCancel();
 }else{
         AfxMessageBox( "密码错误", NULL, MB_OK );
 }

 myHttpFile->Close();
 mySession.Close();

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CHttpFile Class Members

Construction

CHttpFileCreates a CHttpFile object.

Operations

AddRequestHeadersAdds headers to the request sent to an HTTP server.SendRequestSends a request to an HTTP server.SendRequestExSends a request to an HTTP server using the Write or WriteString methods of CInternetFile. EndRequestEnds a request sent to an HTTP server with the SendRequestEx member function. QueryInfoReturns the response or request headers from the HTTP server. QueryInfoStatusCodeRetrieves the status code associated with an HTTP request and places it in the supplied dwStatusCode parameter.GetVerbGets the verb that was used in a request to an HTTP server.GetObjectGets the target object of the verb in a request to an HTTP server.GetFileURLGets the URL for the specified file.CloseCloses the CHttpFile and frees its resources.