title: How to get the Top(base) parentWidget in QT?
body: <p>I am creating a software that must be accessible by parent to childrenWidget (or children of the children of the children....) and from the children to the parentWidget (or the parent of the parent of the parent ...).</p>
  
  <p>For example :</p>
  
  <pre><code>QWidget_Principal --&gt; WidgetApplications --&gt; WidgetMenuBar --&gt; PushButtonFullScreen.
  </code></pre>
  
  <p>The problem is that the way I can do this, is doing </p>
  
  <pre><code>this-&gt;parentWidget()-&gt;parentWidget()-&gt;parentWidget()-&gt;showFullScreen();
  </code></pre>
  
  <p>This there a simple way to do that ?</p>
  
  <p>Thanks in Advance
  And sorry for my very bad english.</p>
  
  <p>Luis Da Costa</p>