title: Qt does not show images
body: <p>Problem show in the link below:
  <a href="http://postimg.org/image/sp9mm85qb/" rel="nofollow">http://postimg.org/image/sp9mm85qb/</a></p>
  
  <p>I try to add this image in code </p>
  
  <pre><code>    QIcon iconmain("qrc:/img/main.png");
      ui-&gt;tabWidget-&gt;tabBar()-&gt;setTabIcon(1,iconmain);
  </code></pre>
  
  <p>Tried to add image from resourse file from disk. But it still invisible.</p>