C++ interface vs D and com

[Adam Sansier via Digitalmars-d-learn]

On Tuesday, 12 July 2016 at 22:55:05 UTC, Adam Sansier wrote:
>> So, the problem now, is how to take the interface, which is 
>> simple, no implementation, and either create the 
>> implementation or create a sort of simple empty proxy that can 
>> be used to instantiate the interface?
>>
>
> I mean automatically of course. I believe D already has some 
> library solution for this but haven't looked them up yet.

Ok, Another hack:

		iInterface x;
		void** y = cast(void**)&x;
		*y = malloc(iInterface.sizeof);
		
		x.__vptr = cast(immutable(void*)*)(*ptr);
		x.func();

works.

x is the object of type iInterface. It has no object associated 
with it, basically create one using malloc and set it's vtable.

this avoids the need to create the class.