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Graphics Interchange Format  |  1998-02-10  |  58.3 KB  |  438x310  |  4-bit (16 colors)
   ocr: Interfaces Classes 1Unknown Engine Class Querylntetface implements AddRefo IEngine Rezeasel) impl. nhens Unknowni Engine rom: Impl. Factory Engine creates Starto Stopo IEngine Engine runeupo Addruelde lUnknown engine.1 Unknoym engine 2 Gettype Chengespeed() Objects Figure 3.A COM interface defines a related set of methods and is assigned a unique interface identifier. A COM class implements one or more interfaces and is assigned a unique class identifier. Each COM class has an associated dess factory responsible for creating COM objects.