Marshaling COM objects for use among different threads was fun. Remember the function 'CoMarshalInterThreadInterfaceInStream'? :-) I feel Windows' C API (i.e.,

Marshaling COM objects for use among different threads was fun. Remember the function 'CoMarshalInterThreadInterfaceInStream'? :-) I feel Windows' C API (i.e., Win32 API) was adopted at a larger scale than COM. It's much easier to use the Win32 C API than COM objects. You'd have to use COM if you wanted to program the shell or DirectX but most of everything else you could use the C API.