Re: Can't add property getter for write-only property in derived interface

From:
"Igor Tandetnik" <itandetnik@mvps.org>
Newsgroups:
microsoft.public.vc.atl
Date:
Mon, 25 Jun 2007 08:35:28 -0400
Message-ID:
<#x1CLVytHHA.2028@TK2MSFTNGP04.phx.gbl>
<andrew.molyneux@gmail.com> wrote in message
news:1182773849.059045.232400@p77g2000hsh.googlegroups.com

You would also need a custom IDispatch implementation that would
support the functionality of both interfaces.


Sorry, I should have been clearer about this - I meant IMyInterface2
would have a copy of everything in IMyInterface, so the IDispatch
would only need to support IMyInterface2's functionality (a superset
of IMyInterface). Call it "copy and paste inheritance" :-)


In this case, make sure IDispatch portion of IMyInterface actually
delegates to that of IMyInterface2. Otherwise you will be in a bad
situation where, say, IDispatch::Invoke behaves differently depending on
the way IDispatch pointer was obtained.
--
With best wishes,
    Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
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