So define one base class whose only purpose is to serve as the hook to XS. Everything is dynamic_cast to that before storing in a void*, every void* is static_cast to that to restore it to the type system.

Since it has no members but lives only for this purpose, it would be an error to remove it. Adding to the type hiarachy is not an issue. Any new code must still conform to this protocol.

—John

In reply to Re: Re: Re: Re: Re: XS typemap and C++ multiple inheritance by John M. Dlugosz
in thread XS typemap and C++ multiple inheritance by FrenchZ

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