----- Original Message ----- From: "Andreas Pokorny" <andreas.pokorny@gmx.de> To: <boost@lists.boost.org> Sent: Saturday, January 01, 2005 11:22 AM Subject: Re: [boost] Re: Object Hierarchies using Interface Types with the BIL
Hi, So the boost interface library implements something like the gnu gcc signatures? You create proxy classes that forward to non-virtual methods?
Regards Andreas Pokorny
That is close, but the method forwarded to may or may not be virtual. I don't know how the gnu gcc signatures worked, I have only heard second-hand that it was a similar technique. There is an article at http://www.codeproject.com/cpp/retrofitpolymorphism2.asp which explains how the technique works using double-width pointers. There was also an article on it, in the September 2004 issue of the C/C++ Users Journal. Christopher Diggins http://www.cdiggins.com