#include <QtCore/qabstractfileengine.h>
#ifndef QABSTRACTFILEENGINE_H
class QAbstractFileEngine{
   /* Some contents are skipped to improve readability */
   public: enum FileName{
      /* ... */
      CanonicalPathName = 7,
      /* ... */
   };
   /* ... */
};
#endif // QABSTRACTFILEENGINE_H