C++ Interop -- Two Questions

[Mike Parker via Digitalmars-d-learn]

On Wednesday, 9 September 2015 at 11:49:33 UTC, Kagamin wrote:
> Static functions are declared with `static` storage class. This 
> looks so basic, it's even not documented in language spec, lol.
>

Yes, I get that. But how does that work when you're linking to a 
C++ library and the translation of the C++ class to D is an 
interface? Or is it possible now to link D classes directly with 
C classes?

> In D classes are reference types by default.

Yes, of course. I just want to verify that the D ref and C++ ref 
are equivalent.

I realize I can do it myself when I sit down this weekend and 
start exploring it, but I'm hoping someone can point me to a blog 
post, some sample code, or just give me some insights to save 
time.