On Monday, 15 July 2019 at 22:01:25 UTC, KytoDragon wrote:
I am currently trying to write a XAudio2 backend and have come
across the problem, that some of the interfaces for XAudio2's
COM objects seem to be missing the first entry in their vtable.
After reading the iterface article in the spec
(https://dlang.org/spec/interface.html#com-interfaces) it seems
that only interfaces inheriting from
core.stdc.windows.com.IUnknown (or any interface named
"IUnknown") get the COM interface layout instead of the D
layout.
What can I do to get the COM layout on interfaces that don't
inherit IUnknown?
Examples: IXAudio2Voice or any of the IXAudio2*Callback
interfaces. I have already declared everything extern(Windows),
but that does not fix it.
From memory COM interfaces are really just `extern(C++)
interface`s, so
extern(C++) interface IXAudio2Voice
{
//methods...
}
should do the trick
