> I was trying to do my components based on the FLTK lib, but I figured out > that the major of the components don't have virtual methods, so there is not > way to do a secure inheritance. If, for instance, I specialize Fl_Widget to > intercept some events by overriding int handle(int) method, and the user > somehow calls the method by using a pointer to the basic class(Fl-Widget), I > will have a not desired behavior. Is there a reason to have the classes this > way(call speed?) and how the people are doing to specialize these > classes(besides rewriting the fltk code, that I don't think is a good idea > for maintenance)? > Thanks, > J.Marcelo Auler Sorry this wasn't a good example, actually the component I'm having trouble is Fl_Group, Fl_Widget has virtual methods for draw and handle. The only virtual method Fl_Group has is the destructor.
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