Interfacing with C++ Class named Object

[Robert M. Münch]

On 2018-05-01 17:14:53 +0000, Robert M. Münch said:

> Yes, great! Thanks. I could extend the code now. But I get a next problem:
> 
> extern (C++, b2d) {
>   class AnyBase {
>     bool isShared();
>   }
> 
>   pragma(mangle, "Object");
>   class b2dObject : AnyBase {
>   }
> 
>   class Image : b2dObject {
>   // class Image {
>     uint create(int w, int h, uint pixelFormat);
>   }
> }
> 
> The linke complains about missing symbols:
> 
> error LNK2001: "public: virtual bool __cdecl 
> b2d::AnyBase::isShared(void)" (?isShared at AnyBase@b2d@@UEBA_NXZ)
> error LNK2001: "public: virtual unsigned int __cdecl 
> b2d::Image::create(int,int,unsigned int)" 
> (?create at Image@b2d@@UEAAIHHI at Z)
> 
> I have in my C++ link lib:
> 
> ?isShared at AnyBase@b2d@@QEBA_NXZ which demangles to => public: BOOL 
> __cdecl b2d::AnyBase::isShared(void)const __ptr64
> 
> So, the difference is the "virtual" specifier on the D side, while the 
> C++ mangeling is missing this. I have this for many functions.
> 
> Any idea how to handle this?

Answering myself. There is a final keyword missing:

  class Image : b2dObject {
  // class Image {
    final uint create(int w, int h, uint pixelFormat);
  }

With this it's working.

-- 
Robert M. Münch
http://www.saphirion.com
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