title: Qt SetRenderHints problem
body: <p>I use Qt 4.6.3 and I have a problem.</p>
  
  <pre><code>ui.graphicsView-&gt;setRenderHints(QPainter::Antialiasing,false);
  </code></pre>
  
  <p>but some lines colors changes. what can I do? Please help me.</p>
  
  <p>I think that I cant express myself. I hava a lot of line. When I use this code same line color changes( top of line lighter than bottom of line ) I can t solve this problem. </p>