Re: C++ COM STA model
George <George@discussions.microsoft.com> wrote:
I don't know what you mean by "automatic (default) marshelling
[sic]". I'm not familiar with the term.
I mean the following as you mentioned before. Sorry I may use an
confusing term,
--------------------
If it is automation compatible, you may
still choose to build proxy/stub DLL, or you can build and register a
type library for it. COM provides so-called universal marshaller which
can marshal any automation-compatible interface based on its
description
in the TLB.
--------------------
Do you mean if we implement IDispatch in the STA COM component, and
register the typelib, then COM Runtime will use the universal default
marshelling on the function call?
For IDispatch, you don't need any type lib. Windows ships with a
proxy/stub DLL for IDispatch already installed and registered.
If you mean a dual interface derived from IDispatch, then yes, you can
register a type library for it and then you don't need proxy/stub DLL.
No need to explicitly use MIDL
compiler to build proxy/stub?
Well, no, but you still use MIDL compiler to build the type library (I'm
not sure what you mean by "explicitly" here).
--
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
overhead. -- RFC 1925