How to download a file using HTTP with URL in QT? with the code below.

  QUrl url = QUrl::fromUserInput(strUrl);

      QFileInfo fileInfo(url.path());
 
      QString fileName=fileInfo.fileName();
  
      if (QFile::exists(fileName)) {
  
      QMessageBox::information(this, tr("HTTP"),
  
      tr("There already exists a file called %1 in "
  
      "the current directory.")
 .arg(fileName));
   
      }
 
       

      file = new QFile(fileName);

      if (!file->open(QIODevice::WriteOnly)) {

      QMessageBox::information(this, tr("HTTP"),

      tr("Unable to save the file %1: %2.")
 
      .arg(fileName).arg(file->errorString()));

      delete file;

      file = 0;
      }

       

      file.setFileName(fileName);
     file.open(QIODevice::WriteOnly);

      QHttp http;
    QEventLoop loop;
    QFile file;
    QObject::connect(&http, SIGNAL(done(bool)), &loop, SLOT(quit()));

    file.setFileName(filename);
    file.open(QIODevice::WriteOnly);

    http.setHost(url.host(), url.port(80));
    http.get(url.toEncoded(QUrl::RemoveScheme | QUrl::RemoveAuthority), 
&file);

    loop.exec();