Hi, > > But there is more: > > The BMessage::Flatten() function is derived from BFlattenable. > [...] > > In fact, at least under BeOS R5, BMessage doesn't derive from BFlattenable. > I haven't heard a good reason for that yet, though. I have no clue why I thought this was the case. Maybe just because it would have been so obvious. Best regards, -Stephan