Re: When To AddRef

"Igor Tandetnik" <>
Fri, 16 Nov 2007 09:35:45 -0500
"Alexander Mueller" <> wrote in message

Igor Tandetnik schrieb:

Alexander Mueller <> wrote:

Btw is there a COM-call or something else (macro,
smartpointer, an ATL-Wrapper) that does both in one, copy the
pointer and call AddRef? just to not forget to addref?

CComPtr automatically AddRef's on construction or assignment, and
Release's in destructor.

How do I release/delete/remove from memory a pointer wrapped with

CComPtr releases automatically when destroyed (e.g. when it goes out of
scope). This is sufficient in most cases (indeed, this is the point of
using it in the first place). On those rare occasions when you need to
release it manually, it provides Release method. On still rarer
occasions when you want to take over the raw pointer and relieve CComPtr
of the responsibility of managing it, there's Detach method.

Simply NULL it?

You can do this, too. It is equivalent to calling Release.
With best wishes,
    Igor Tandetnik

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