Re: How to display messages to the user during long processes!!

From:
"Tom Serface" <tom.nospam@camaswood.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 23 Sep 2008 14:27:46 -0700
Message-ID:
<15A6E98B-0E22-46F3-9E36-0CB7A9433B09@microsoft.com>
Yes, those don't tell you anything, they just look nice. I think an
occasional "dot" added to a string is more informative.

Tom

"Ian Semmel" <isemmelNOJUNK@NOKUNKrocketcomp.com.au> wrote in message
news:%23EkrTlaHJHA.4060@TK2MSFTNGP03.phx.gbl...

Tom Serface wrote:

To add to what others have written, and I would also use a progress bar,
probably on the status bar or a pop up dialog for this sort of thing, you
may want to provide a way to cancel the operation if you think it may
take a really long time to accomplish. I always hate it when I'm held
hostage by a program that is "doing something" and if you are doing this
in a thread even if they exit the program the thread loop may still be
executing and that will cause you more grief. I typically put a function
into the thread object Cancel() that sets a variable that tells the
thread to stop executing no matter what it is doing.

You may also have trouble doing the progress bar if you are using an
external parsing library. I know this sort of thing is really difficult
to do with something like Xerces because it just sort of takes over and
you don't really know how far you are along in the process until it's
done. You do get call backs for elements, but you don't really know the
% of the process that is complete so it's a guess at best...


The main thing is to show that the program is actually running, rather
than displaying some animated gif or the like which just churns on
regardless. A practice much favoured by Microsoft programmers.

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