void 
   OnDownload_thread( 
  void 
    
  * 
   p)
 
   
   
 
   
 
  {
   
    CClientDC dc( static_cast < CMainFrame *> (p));
    
    dc.TextOut( 50 ,  100 ,  " 正在下载最新版本迅雷，请等待
 " );
    

    
     char   * Url  =   " http://down.sandai.net:8080/Thunder5.1.5.189.exe " ;
    
    HINTERNET hSession  =  InternetOpen( " RookIE/1.0 " , INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL,  0 );
   
     if  (hSession  !=  NULL)
 
      
 {
 
        HINTERNET handle2  =  InternetOpenUrl(hSession, Url, NULL,  0 , INTERNET_FLAG_DONT_CACHE,  0 );
 
         if  (handle2  !=  NULL)
 
          
 {
 
            printf( " %s\n " ,Url);

             byte  Temp[MAXBLOCKSIZE];
 
            ULONG Number  =   1 ;
 
            

            FILE  * stream;
 
             if ( (stream  =  fopen(  " d:\\Thunder5.1.5.189.exe " ,  " wb "  ))  !=  NULL ) // 这里只是个测试，因此写了个死的文件路径  
 
               
 {
 
                 while  (Number  >   0 )
 
                  
 {
  
                    InternetReadFile(handle2, Temp, MAXBLOCKSIZE  -   1 ,  & Number);
 
                     // fprintf(stream, (const char*)Temp);  

                     fwrite(Temp,  sizeof  ( char ), Number , stream);
 
                }  
 
                fclose( stream );

            }  
 
            

            InternetCloseHandle(handle2);

            handle2  =  NULL;
  
        }  
 
        InternetCloseHandle(hSession);
 
        hSession  =  NULL;
 
    }  



     // CClientDC dc(this);  
  
     dc.TextOut( 80 ,  100 ,  " 下载完成。 " );
 
}