Today I needed to have enums with an inheritance ability. I have some HMI panels in an application where each panel button has a handler function, which is placed incide a stl vector. Each of these buttons can be enabled and disabled using a unique ID, it's number in the vector.
The problem I fased was that the base class implementing the basic functionality of the panels (done and cancel) also implemented the indecies for these functions. Now in a derived class i wanted to extend the enum with button indecies for the buttons added by the new class, but enums and C++ does not support this directly.
To overcome the problem a template can be used. here is a similar approach using atemplate to extend enum definitions. This solved my problems and I can get the panels back in action.
Darn, did you ever have trouble remembering just how you did this and that on your Box???
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