How to COM interfaces work

[evilrat via Digitalmars-d-learn]

On Sunday, 19 March 2017 at 03:27:28 UTC, StarGrazer wrote:
>
>
> I'd just like to get some conformation on the process so at 
> least I know I'm headed in the right direction. The project is 
> pretty complex and most of the stuff is done in compile time 
> code.

What debug shows? If CoCreateInstance and calling other 
interfaces is working for you, then it could be really D issue, 
because not much people really use this stuff. Also it could be 
wrong vptr table (method order issue) generated from reflection, 
or it could be D vptr issues related to com (can you try 
interface instead of class?), or D compiler bugs or wrong ABI(try 
different compilers/versions)

That's probably it, not sure if there is other potential quirks 
out there...