Re: Out of Memory Error: MultiThreading Problem?

From:
"Michael K. O'Neill" <MikeAThon2000@nospam.hotmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Mon, 5 Nov 2007 16:14:04 -0800
Message-ID:
<#CTJynAIIHA.5764@TK2MSFTNGP06.phx.gbl>
"Marcus" <mcdesigns@walla.com> wrote in message
news:1194304660.323930.201300@t8g2000prg.googlegroups.com...

On Nov 5, 2:45 pm, "Michael K. O'Neill"
<MikeAThon2...@nospam.hotmail.com> wrote:

"Marcus" <mcdesi...@walla.com> wrote in message

news:1194230556.443528.161860@i38g2000prf.googlegroups.com...

void MessageMgr::SendMsgToDlg(const char* strMsg, int msgType){
  CString * s = new CString(strMsg);
  pDlg->PostMessage( UWM_ADDSTRING, msgType, LPARAM(s));

}


The messages were posted by PostMessage() which moves on without waiting

for

the message to be processed. So, there is a distinct possibility that
strMsg points to garbage by the time that the message is handled by the
above code.


Yes, thanks I thought this too and tried using SendMessage, but to no
avail. I'm going to try and turn off all messaging to the GUI and see
if I can isolate the problem to the dll.


No, not the PostMessage in the above code, which is perfectly fine.

Your original post states that the "closed source" dll is using PostMessage
to send messages to you. That's the PostMessage that I'm referring to. If
the dll is using PostMessage() on a heap-allocated char*, then the pointer
is pointing to stale data by the time the message is handled.

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