COM/OLE advanced questions

[Daniel Kozak]

AFAIK you can only use COM from windows anyway. OK I have been using them
from linux but only with WINE help.

On Thu, Nov 2, 2017 at 3:22 PM, Guillaume Piolat via Digitalmars-d-learn <
digitalmars-d-learn at puremagic.com> wrote:

> I wonder if anyone has used COM in dlang extensively.
>
> Context: I must use COM FFI interfacing on systems that aren't
> necessarily  Windows. It is essential that the layout of interfaces and
> classes are the same than in equivalent C++ objects.
>
>
> Question 1. Is it mandatory to inherit from core.sys.windows.unknwn.IUnknown,
> or just having an interface named "IUnknown" validate it for being a COM
> interface?
>
>    If yes, then how am I supposed to use COM interfaces in other OSes?
> core.sys.windows.unknwn.IUnknown is defined under version(Windows).
>
>    I wonder what the exact compiler hook is.
>
>
> Question 2. If this fails, may I emulate COM vtable layout with
> extern(C++) class? I wonder what the exact differences are anyway between
> extern(C++) and the special IUnknown.
>
>
> Question 3. It seems I can inherit both from A D object and a COM
> interface. What will be the choosen layout?
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puremagic.com/pipermail/digitalmars-d-learn/attachments/20171102/25cd7f1f/attachment.html>