I'm trying to register a file change notification using the WMI subsystem on Windows and the Microsoft example shows using an EventSink class (custom) that inherits from IWbemObjectSink. It's step 6 located here: https://msdn.microsoft.com/en-us/library/aa390425(v=vs.85).aspx

I'm looking through http://x86asm.net/articles/oop-from-low-level-perspective/index.html

but I'm not sure the data-format will be layed out in memory that will be compatible with the COM apis.

I haven't had to do anything with inheritance in any of my work with ASM yet. I'm hoping someone can advise me as to how to create an EventSink class (whose memory layout is compatible with COM apis) since it inherits (not talking about a simple struct here).