Re: can event handler call event source passed as connection point parameter?

"Alexander Nickolov" <>
Tue, 3 Oct 2006 12:25:24 -0700
Correct. The code before that could certainly perform QI,
but apparently it doesn't. It's be an overkill if it did - essentially
replicating the work of DispCallFunc.

I believe a pure dispinterface can only accept IDispatch and
IUnknown pointers by definition, and specifying a derived
interface in IDL instead is only syntactic sugar. After all, the
dispinterface is the implemenation of IDispatch, not the class
methods it calls within, which are implementation-specific.

Alexander Nickolov
Microsoft MVP [VC], MCSD

"Igor Tandetnik" <> wrote in message

Alexander Nickolov <> wrote:

This is a pure dispinterface, so DispInvoke is not involved.

Ah, I see. For some reason I thought IDispEvent[Simple]Impl uses
DispInvoke, but in fact it uses DispCallFunc which does not have access to
type info, but only to VARTYPE constants.
With best wishes,
   Igor Tandetnik

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