title: Add Phonon::SeekSlider in Qt Creator?
body: <p>I’m trying to add a <code>Phonon::SeekSlider</code> in Qt Creator but can only add it to my form in code.</p>
  
  <pre><code>seekSlider = new Phonon::SeekSlider(this);
  seekSlider-&gt;setMediaObject(mediaObject);
  ui-&gt;setupUi(this);
  seekSlider-&gt;show();
  </code></pre>
  
  <p>How can I add the SeekSilder in Qt Creator?</p>