#include <QtGui/qstyleoption.h>
#ifndef QSTYLEOPTION_H
class QStyleOptionButton: public QStyleOption{
   /* Some contents are skipped to improve readability */
   public: enum ButtonFeature{
      None = 0,
      Flat = 1,
      HasMenu = 2,
      DefaultButton = 4,
      AutoDefaultButton = 8,
   };
   /* ... */
};
#endif // QSTYLEOPTION_H