Re: Need help to return string value from COM

"Igor Tandetnik" <>
Tue, 20 Jun 2006 14:14:09 -0400
Right. And once you actually put all the checking in, I bet your version
would not be much shorter than my version (where all the checking is
done inside CComBSTR::CopyTo).

Alexander Nickolov <> wrote:

Ah, I omitted the argument checking for brevity...

"Igor Tandetnik" <> wrote in message

"Alexander Nickolov" <> wrote in message

Well, sorry, should have used SysAllocStringLen, I agree.
Though it does check and returns E_OUTOFMEMORY if the
input is not NULL.

It checks for val being NULL. It doesn't check for ret being NULL,
but immediately dereferences it as *ret. It is customary to return
E_POINTER when an [out] parameter's pointer is NULL.
With best wishes,
   Igor Tandetnik

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