title: Determining Qt stylesheet options programmatically?
body: <p>Is it possible to look up stylesheet values at runtime in Qt?</p>
  
  <p>I'm working on a custom button derived from <code>QPushButton</code> that has some stylesheet properties set. I'd like to be able to look up some stylesheet settings like border width, <code>margin</code>, <code>padding-top</code>, <code>padding-left</code>, <code>padding-right</code>, etc.  Is this at all possible to do without calling <code>widget-&gt;getStyleSheet()</code> and parsing out the values myself?</p>