Re: Fundamental COM questions

From:

"Alexander Nickolov" <agnickolov@mvps.org>

Newsgroups:

microsoft.public.vc.atl

Date:

Wed, 17 May 2006 17:26:14 -0700

Message-ID:

<eEhGtGheGHA.2068@TK2MSFTNGP02.phx.gbl>

GIT has advantage over CoMarshalInterface in case of a proxy
only if you need to unmarshal multiple times. For single unmarshal
CoMarshalInterface works just fine with a proxy...

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

"Ranjit" <ranjitiyer@gmail.com> wrote in message
news:1147904020.636117.185790@i39g2000cwa.googlegroups.com...

Hello Group,

I had a couple of questions on COM.

1. Don Box mentions interpretive marshalling as one of the forms of
marshalling, other than the typelibrary, standard and custom
marshalling. Could someone briefly explain how the former works?

2. Essential Com also says that the one extra capability that Global
Interface Table has over CoMarshalInterface/CoUnmarshalInterface is
that it can store and unmarshal interface pointers that are themselves
proxies to remote COM interface. So if a remote COM object was created
in a client STA and the proxy to which was put in the GIT, and then a
worker thread (in an other apartment, but in the client process)
accesses the proxy pointer from the GIT (GetInterfaceFromGlobal), will
a proxy to a proxy be installed now? Am not clear how that works.

Thanks,
Ranjit