Vision

[Szymon Gatner via Digitalmars-d]

On Thursday, 22 October 2015 at 14:07:17 UTC, Adam D. Ruppe wrote:
> On Thursday, 22 October 2015 at 13:26:37 UTC, Szymon Gatner 
> wrote:
>> At the moment, simplest integration presented in Adam Ruppe's 
>> book does not work on Windows (x64 or x86).
>
> Have you tried a C++ class without a virtual destructor too? 
> That's the trickiest part in the first part of the book and 
> maybe that is what broke recently. I haven't tried any of this 
> for like a year now.
>
> The other part about mimicing with structs is a fragile thing 
> anyway, I presented it because you can make it work, you're 
> just on your own.

No, I just tried your code verbatim (as I do with every new D 
release). Problem now is casting Animal down to Cat (in 
freeCat()) on the D side, casting results in null after pointer 
was passed to C++.

I have no idea what is suppose to work in D/C++ interop as there 
is very little (or outdated) information on the subject.