title: Change the size of Qt dialogs depending on the platform
body: <p>I've got some QDialog subclasses that were designed on Windows and which are now being ported over to Mac OS X. The problem is that the default font on Mac OS X appears to be much bigger, so the dialogs look quite cramped.</p>
  
  <p>What's the best way of making the dialogs bigger on Mac OS X than on Windows? (The size must remain fixed on each platform and they must look native.)</p>
  
  <p>An example is the dialogs in Perforce's P4V.</p>
  
  <p>Thanks.</p>