11.08.2014 14:03, Adriano dos Santos Fernandes wrote: > If you add QueryInterface it should be for QueryInterface purposes, but > as you write, it will be a method that only Delphi or FPC will understand.
Any language/compiler that can work with COM will understand IUnknown methods (try to name one that don't work with COM/PAC). Delphi and FPC just hide reference counters under the hood as well as dealing with exceptions. > And QueryInterface approach is very very ugly approach to OOP. One method which is never called under normal circumstances and can always return E_NOINTERFACE?.. Compare changes in code needed for adding one stub method and changes needed for supporting hand-made VMT. The latter loose. -- WBR, SD. ------------------------------------------------------------------------------ Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
