title: QDir mkdir with absolutepath
body: <p>I have problem with the creation of dir with Qt.
  I would like to create a dir in documents'dir so, I make some things like that :</p>
  
  <pre><code>QString path("C:/Users/Me/Documents/MyApp/profiles/");
  Qdir dir = QDir::root();
  dir.mkdir(path);
  </code></pre>
  
  <p>But that doesn't work! I have test with "/" and "\" for the separators but in the two cases that not work.</p>
  
  <p>How I can create my dir?</p>
  
  <p>Thank you.</p>