Re: this->EndDialog hangs with thread

From:
"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 29 Aug 2007 10:37:44 -0400
Message-ID:
<eHeNzok6HHA.4712@TK2MSFTNGP04.phx.gbl>
"Scott Kraemer" <skraemer8@cox.net> wrote in message
news:ursGyvh6HHA.1188@TK2MSFTNGP04.phx.gbl...

I changed my code and had a client test it. He still gets a hang on close
and only used the IRC thread.

The only thing I reference inside my thread now is :
CTest1Dlg *dlg=(CTest1Dlg*) AfxGetApp()->GetMainWnd();

Is this bad to do as well?


It is legal.

which I use for getting the Socket Information that I declared in the
header.
send(dlg->clisock,User,User.GetLength(),0); //these send irc connect
information to irc server
send(dlg->clisock,Nick,Nick.GetLength(),0);
send(dlg->clisock,Join,Join.GetLength(),0);

And I do some receives as well.


These all have the potential to get corrupted data if any of the data can be
changed by the main thread while the secondary thread is running. But if
the data is all unchanging it is safe to access it from the secondary
thread.

What does "hang on close" mean? It is necessary to tell your thread to
exit, and wait until it does exit, before you let the main thread shut down.
This will avoid things like the secondary thread using dlg-> after dlg has
become invalid.

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