#include <QtGui/qabstractslider.h>
#ifndef QABSTRACTSLIDER_H
class QAbstractSlider: public QWidget{
   /* Some contents are skipped to improve readability */
   protected: enum SliderChange{
      /* ... */
      SliderStepsChange = 2,
      /* ... */
   };
   /* ... */
};
#endif // QABSTRACTSLIDER_H