Namespace,qobject,enum trick. How to get it to work?

[SnarlCat]

So you think something like:

#ifdef Q_MOC_RUN
class foo {
  Q_GADGET
  Q_ENUMS(Direction)
public:
  enum Direction { Up, Down, Left, Right, Front, Back };
};
#else
namespace foo {
  Q_ENUMS(Direction)
  enum Direction { Up, Down, Left, Right, Front, Back };
}
#endif

#ifdef Q_MOC_RUN
class foo {
  Q_GADGET
  Q_ENUMS(Direction)
public:
  enum Direction { Up, Down, Left, Right, Front, Back };
};
#else
namespace foo {
  Q_ENUMS(Direction)
  enum Direction { Up, Down, Left, Right, Front, Back };
}
#endif

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...is what we're looking for?

This certainly wasn't evident in qnamespace.h ...

Thanks!