title: qt sorting of container of Type* elements
body: <p>I have a custom type Class1 in which <code>bool operator &lt; (Class1&amp; other);</code> was defined.<br>
  Also i have some container for example <code>QVector&lt;Class1*&gt; container;</code><br>
  When I'm using <code>qSort(container.begin(),container.end());</code> items was sorted by their memory address.
  Then i desided to implement <code>bool operator &lt; (Class1* other);</code> but sorting is perfomed in the same way.</p>