#include <QtGui/qstyleoption.h>
#ifndef QSTYLEOPTION_H
class QStyleOptionFrameV2: public QStyleOptionFrame{
   /* Some contents are skipped to improve readability */
   public: enum FrameFeature{
      /* ... */
      Flat = 1,
      /* ... */
   };
   /* ... */
};
#endif // QSTYLEOPTION_H