title: How to specify the QFileDialog::getExistingDirectory() method?
body: <p>With the method/command:</p>
  
  <pre><code>OpenCreateDirectory() 
  {  
      QString Directory = QFileDialog::getExistingDirectory(this,
                          tr("Choose Or Create Directory"),
                          "/home",
                          QFileDialog::DontResolveSymlinks);
  }
  </code></pre>
  
  <p>I can create a new directory or choose an existing one. Is there a way to disable the possibility to create a new directory? Also, is there a way to disable the possibility to choose an existing directory?</p>
  
  <p>To be more precise: When I use the method above, a window pops up in which I can create a new directory OR open an existing directory. What I want to do is to limit the method, so that I just can create a new directory without being able to just open an existing directory OR in the other case limit the method, so that I just can open an existing directory without being able to create a new directory.</p>