#include <QtGui/qpaintengine.h>
#ifndef QPAINTENGINE_H
class QPaintEngine{
   /* Some contents are skipped to improve readability */
   public: virtual void drawPolygon(class QPointF const * points, int pointCount, enum QPaintEngine::PolygonDrawMode mode);
   /* ... */
};
#endif // QPAINTENGINE_H