I have just finished my first COM server DLL. And it runs smoothly. So I'd like to show my understanding for now and hear your critics.

1- How COM simply works? COM - "The Call Chain"

COM Lib methods -> Traditional DLL exports -> Classes encapsulated in the COM DLL

2- With C++, the benefits like "interface" in OOP can only be taken advantage of at the source level. With COM, these benefits can be used at a binary level.

3- Some illustration about interface

&pInterface -------> pInterface ----------> Interface-----------------> methods

  Ixx **         Ixx *      (method table)

 (void **)

A Interface is a data structure in memory. It's nothing but a memory area containg a method table.

Is my understanding alright?

Thanks for your revision.