Re: Typelib entry in registry

From:
"Igor Tandetnik" <itandetnik@mvps.org>
Newsgroups:
microsoft.public.vc.atl
Date:
Sat, 29 Dec 2007 20:00:33 -0500
Message-ID:
<#nBVj9nSIHA.1528@TK2MSFTNGP04.phx.gbl>
"sawer" <sawer@discussions.microsoft.com> wrote in message
news:CA9D771E-61F4-4B17-B77F-016AEF465CD4@microsoft.com

Hi
I want you to ask a question about typelib entry in registry. If we
look registry we can see there are typelib entries both in
HKEY_CLASSES_ROOT\CLSID and HKEY_CLASSES_ROOT\Interface. Why are
there 2 entries? What is the purpose of typelib entry under
-CLSID
and
-Interface?


As far as I can tell, the TypeLib key under CLSID is not used by the
system in any way. It may be used by some development tools, such as
VB's Object Browser (I don't know for sure if Object Browser
specifically uses it or not).

TypeLib entry under Interface key is used by the universal (aka
typelib-driven) marshaller. The interface description in the type
library is used to marshal method parameters in cross-apartment calls.
--
With best wishes,
    Igor Tandetnik

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