On 11/08/2014 07:54, Dimitry Sibiryakov wrote: > 11.08.2014 12:47, Adriano dos Santos Fernandes wrote: >> The hack approach dependent on compilers details is the one we use >> currently. > Currently used pure abstract classes are exactly like in COM. And "The > Component Object > Model specifies a *programming-language-independent _binary standard_ for > object > implementations* (i.e., it specifies what the implementation of the objects > has to look > like). Any object conforming to this standard is a legitimate Windows Object, > no matter > what language is used to implement it." http://www.objs.com/x3h7/ole2.htm > To make current interface completely compatible with MS COM (Delphi/FPC > IInterface) it > is enough to add a single method - QueryInterface. All this was already > discussed years ago. > And who says C++ compilers vendors needs to: 1) implement vtable-compatible layout in Windows 2) implement vtable-compatible layout in non-Windows
? Sure Microsoft thinks they dominate the Worlds, but... The current approach of guessing the C++ vtable is compatible between compilers (be it or not about COM classes) is a hack at least for non-Windows platforms who may use different and non-standard ABIs. Adriano ------------------------------------------------------------------------------ Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
