title: How does stylesheets work in Qt?
body: <p>It is just curiosity. In Windows, for instance, how Qt interprets the stylesheets? this seems to be trivial, but, how does Qt tells the operating system to change the appearance of the widgets? Which library of methods of the Windows API uses? Does WPF uses the same Windows API libraries?</p>
  
  <p>Cheers,</p>