title: Converting QModelIndex to QString
body: <p>Is there a way to convert QModelIndex to QString? The main goal behind this is that I want to work with the contents of dynamically generated QListView-Items.</p>
  
  <pre><code>QFileSystemModel *foolist = new QFileSystemModel;
      foolist-&gt;setRootPath(QDir::rootPath());
      foolistView-&gt;setModel(foolist);
  
  [...]
  
  QMessageBox bar;
  QString foolist_selectedtext = foolistView-&gt;selectionModel()-&gt;selectedIndexes();
  bar.setText(foolist_selectedtext);
  bar.exec;
  </code></pre>
  
  <p>Is this even the correct way to get the currently selected Item?</p>
  
  <p>Thanks in advance!</p>