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function pointers + virtual

For Beginners

Started by Axiverse November 12, 2004 03:00 PM

2 comments, last by BiTwhise 19 years, 5 months ago

Axiverse

367

Author

November 12, 2004 03:00 PM

if a class created a pointer to one of it's virtual fuctions, will it still go to the inheriting class's definition of that function?

twanvl

512

November 12, 2004 03:10 PM

You can't create normal function pointers to class member functions, only 'pointers to member function'. To answer your question; yes they will call the implementation in the derived class.

IFooBar

906

November 13, 2004 02:20 AM

only if the object calling it is infact a derived class type. AFAIK the function call should act "just as it should"

[size=2]aliak.net

BiTwhise

134

November 13, 2004 08:49 AM

pointers to virtual functions store the offset into the vtable rather than the pointer to the actual function, and thus works as described above.

go here, for a in depth description of function pointers and a fast delegate implementation