Re: How do I terminate CWinApp application?

From:

"AliR $VC++ MVP$" <AliR@online.nospam>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 31 Jul 2007 17:32:34 GMT

Message-ID:

<SmKri.30206$2v1.3123@newssvr14.news.prodigy.net>

If you use SendMessage then you will close the application and then return
to a none existant code, which will most likely break things (cause fatal
exceptions and such).

You will have to use PostMessage so that things get cleaned up correctly.
The Message will mostly likely get processed right after you return from
your processing function, when the message pump comes back to life.

AliR.

"Alan Williams-Key" <AlanWilliamsKey@discussions.microsoft.com> wrote in
message news:1154A5CE-915C-4706-8167-C560D1022DF3@microsoft.com...

Actually I just tried this. The app closed but I got the "MFC application
has
encountered a problem and needs to close (blah blah) Please tell Microsoft
about this problem (blah blah) Debug - Send Error Report - Don't Send."
pop
up. That's OK for me but not my customers.

Alan

"Alan Williams-Key" wrote:

Hey, you guys are quick with the replies, thanks.

I don't think PostMessage (also suggested by AliR) will work for me. This
happens deep in a data entry process. PostMessage does not have immediate
effect so I would have to completely rewrite my data processing functions
to
allow for abnormal exits all over the place.

Would SendMessage work, and which is better, WM_QUIT or WM_CLOSE?

thanks

Alan

"Scott McPhillips [MVP]" wrote:

Alan Williams-Key wrote:

Sorry if this has been dealt with before..
I have a CWinApp application which has to read an validate a lot of
data
from files at start up. In some circumstances it is possible for the
files to
contain a fata error in the formatting from which my application
cannot
recover. I want to close the applicaiton down cleanly. I have tried:

AfxGetApp()->CloseAllDocuments(TRUE);
ExitProcess(0);

While this works find in debug configuration, when I try it out on
the
release version it goes very wrong and I get an error message

The instruction at "0x&c809783" referenced memory at "0x003f4544".
The
memory could not be written. Click OK to terminate the program.

I have looked in the disassembly view an there is no valid program at
"0x&c809783", just question marks.

What is the correct way to abnormally terminate a CWinApp
application?

If you are still in InitInstance return FALSE. Otherwise
AfxGetMainWnd()->PostMessage(WM_CLOSE, 0, 0);

--
Scott McPhillips [MVP VC++]