#include <QtGui/qregion.h>
#ifndef QREGION_H
class QRegion{
   /* Some contents are skipped to improve readability */
   private: struct QRegionData{
      /* ... */
#if defined(Q_WS_WIN)
#elif defined(Q_WS_X11)
      public: void* xrectangles;
#elif defined(Q_WS_MAC)
#endif
      /* ... */
   };
   /* ... */
};
#endif // QREGION_H