Extending enums in C++?

Question

Is there a way in C++ to extend/\"inherit\" enums?

I.E:

enum Enum {A,B,C};
enum EnumEx : public Enum {D,E,F};

or at least define a

Answer 1

Just an idea:

You could try to create an empty class for each constant (maybe put them all in the same file to reduce clutter), create one instance of each class and use the pointers to these instances as the "constants". That way, the compiler will understand inheritance and will perform any ChildPointer-to-ParentPointer conversion necessary when using function calls, AND you still get type-safety checks by the compiler to ensure no one passes an invalid int value to functions (which would have to be used if you use the LAST value method to "extend" the enum).

Haven't fully thought this through though so any comments on this approach are welcome.

And I'll try to post an example of what I mean as soon as I have some time.