Re: Windows message question

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#12926

From: Bob Gonder
Date: Thu, 06 Nov 2003 16:53

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Remy Lebeau (TeamB) wrote:

>
>"Martin C" <martinc@aol.com> wrote in message
>news:3fa2df07@newsgroups.borland.com...
>
>
>Correct.  Especially since you are apparenty using WM_COPYDATA, which *must*
>be called via SendMessage(), never PostMessage().  SendMessage() waits until
>the message is processed, whereas PostMessage() does not.  This is critical
>particular when passing pointers around, to ensure that the passed memory is
>still valid by the time the message is eventually processed.
>
>> so is it possible by anyway not to keep the dll wait until all the
>> code under my exe message event finish executing.

I thought I read a function lately, but don't remember it's name, that
the receiver can send to acknowledge a SendMessage, but continue
processing.  So, if you are done with the shared memory, but have
other processing to do, you can let the caller continue on. Just
remember that as soon as you call the release function, that the
passed memory is not reliably available.

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From: Bob Gonder <notbg@notmindspring.invalid>
Newsgroups: borland.public.cppbuilder.nativeapi
Subject: Re: Windows message question
Date: Thu, 06 Nov 2003 08:53:28 -0800
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