title: TToolBar paints incorrectly on non-themed Windows
body: <p>It was recently brought to my attention that one of our applications paints incorrectly on non-themed Windows.</p>
  
  <p>Toolbar is built from TSpeedButtons nested in TToolbar which in turn lives inside a page control.</p>
  
  <p>On themed Windows everything looks nice. Well, not nice, but ok.</p>
  
  <p><img src="https://17slon.com/krama/images/toolbar-ok.jpg" alt="TToolbar on themed Windows"></p>
  
  <p>On non-themed Windows, however, weird vertical lines appear inside buttons.</p>
  
  <p><img src="https://17slon.com/krama/images/toolbar-problem.jpg" alt="Toolbar on non-themed Windows"></p>
  
  <p>I've searched around but cannot find any report of such a problem. (Most probably just my search kung fu sucks.) Does anybody know of a description of this problem or, even better, a fix?</p>