Re: dual interface for IDispatch

From:

"Alf P. Steinbach" <alfps@start.no>

Newsgroups:

microsoft.public.vc.language

Date:

Fri, 15 Feb 2008 12:25:42 +0100

Message-ID:

<13rati22hsik5f3@corp.supernews.com>

* George:

Thanks Alf,

Maybe I should express my confusion in another way. :-)

Now my confusion is, to implement an interface for OLE automation, once we
inherit from IDispatch interface, then it is always a dual interface, right?

What type of implementation in C++ for a component is not a dual interface?
I can not imagine a sample. Any ideas?

regards,
George

"Alf P. Steinbach" wrote:

* George:

Hello everyone,

Could anyone show me a sample or where to find dual interface implementation
for IDispatch please?

I have seached for MSDN and Google for half an hour and seems all I could
get are MFC based.

Any non-MFC and non-ATL (pure C++) sample?

Implementing IDispatch is non-trivial.

You're better served using an existing library (e.g. ATL) than doing it
yourself.

That said, as I recall Brockschmidt's "Inside OLE" book had some
examples, and as I recall it was included with old versions of MSDN Library.

Cheers, & hth.,

- Alf

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Cheers, & TIA.,

- Alf

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A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

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