directx bindings problem

[Heinz]

On Tuesday, 29 October 2013 at 19:40:40 UTC, Benjamin Thaut wrote:
> So I found it. Its actually your fault.
>
> IXAudio2Voice isn't a COM interface. That means it should _not_ 
> inherit from IUnkown. But if it isn't a COM interface it can't 
> be a regular D interface either, because if it is a regular 
> D-Interface it will not have a v-table layout that conforms 
> with C++. That means you have to put "extern(C++)" in front of 
> IXAudio2Voice to make it work.
>
> So to make stuff work you should change
>
> interface IXAudio2Voice : IUnknown
>
> to
>
> extern(C++) interface IXAudio2Voice
>
> Then everything works fine.
>
> Tip for the future: Using the "Microsoft Symbol Server" and the 
> Visual Studio Debugger you can easily verify if your COM 
> interfaces call the correct methods or if you messed up the 
> declarations.
>
> Kind Regards
> Benjamin Thaut

Whoa! This did the trick with XAudio2! Thank you very much. I'll 
have the C++ linkage in mind for the rest of the DirectX APIs. 
One question: Should the other interfaces like IXAudio2 for 
example use extern(C++) whether they are COM interfaces or not?

I'll also take your tip. I got the link for the symbol server. Do 
you have a link for a tutorial or something for the Visual Studio 
Debugger? I'd like more info about it. I assume the debug 
information from DMD is compatible with this debugger, right?

Thank you again for your help and time.