Re: use customized data type in IDispatch.Invoke

"Igor Tandetnik" <>
Thu, 18 Sep 2008 09:23:19 -0400
"George" <> wrote in message

I searched here. I find VARIANT is not in the list, is VARIANT ole
automation data type? If not, what are exactly ole automation data

Yes, VARIANT is an automation type (when passed by reference). You can
set up a VARIANT that refers to another VARIANT. I don't know why it's
not mentioned in the list.

2. automation compatible interface and automation compatible interface

what are the exact definition of the two terms above? I really did
some search, but not found any official ones.

Well, the very article you quoted sort of tells you. An automation
interface is one that's derived from IDispatch, or IUnknown and marked
[oleautomation], and whose methods only use automation types for their
parameters and return values.
With best wishes,
    Igor Tandetnik

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