COM in plain C

Content A COM object and its VTable A GUID QueryInterface(), AddRef(), and Release() An IClassFactory object Packaging into a DLL Our C++/C include file The Definition (DEF) file Install the DLL, and register the object An example C program An example C++ program Modifying the code What's next? IntroductionThere are numerous examples that demonstrate how to use/create COM/OLE/ActiveX components.