title: How to make a QGraphicsTextItem clickable?
body: <p>In the "About box" of my software, I used a <code>QGraphicsTextItem</code> to show the about-text.</p>
  
  <p>This text contains hypertext links (in the form  of: <code>&lt;a href="http://some.random.site"&gt;link&lt;/a&gt;</code>).</p>
  
  <p>The item shows up properly (hypertext links are blue and underlined). However, when I click on them, nothing happens.</p>
  
  <p>Here is how I created the <code>QGraphicsTextItem</code>:</p>
  
  <pre><code>d_about_text_item = new QGraphicsTextItem;
  d_about_text_item-&gt;setTextInteractionFlags(Qt::TextBrowserInteraction);
  d_about_text_item-&gt;setHtml(aboutText());
  </code></pre>
  
  <p>As I understand the <a href="http://doc.trolltech.com/4.6/qt.html#TextInteractionFlag-enum" rel="nofollow noreferrer">Qt documentation</a>, the call to <code>setTextInteractionFlags</code> should allow me to handle special hypertext links click events.</p>
  
  <p>Is there anything else I should do to be able to click on the links and show up the linked page in the default system browser ?</p>