Re: DoDataExchange woes

From:

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

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 5 Jun 2008 15:05:30 -0500

Message-ID:

<1FX1k.3644$ZE5.1878@nlpi061.nbdc.sbc.com>

Not irritated, just pointing out the obvoius. (So that next time you have a
problem, you can describe it better)

AliR.

"WP" <invalid@invalid.invalid> wrote in message
news:6aquhfF380odaU1@mid.individual.net...

AliR (VC++ MVP) wrote:

The problem you described was the "Add variable" was disabled. compelety
different than DoDataExchange not getting called.

Sorry if I made you irritated, I didn't mean to sound ungrateful or that
you didn't help. I simply didn't describe my problem well enough in my
first post (even though it was so long, lol). I simply thought I had to go
through the resource editor to make dynamic data exchange work. I should
have showed my code also and said that my DoDataExchange wasn't called
(but I was so sure it was due to me not being able to set it up in the
resource editor, lol). Your help is much appreciated and that .aps-file
isn't removed during a make clean, right? (Can't try it from the computer
I'm currently on.)

As far as in which overwriten methods you should call the superclasses
method, every single one unless you specifically don't want whatever its
that the superclass does.

Right, thanks, I will go through my code and check where I've forgotten to
do this and add it so I don't get bitten later by such as missing call as
I was today.

- Eric

AliR.

"WP" <invalid@invalid.invalid> wrote in message
news:6aqt5iF37oetkU1@mid.individual.net...

AliR (VC++ MVP) wrote:

I think if you delete the .aps file in your projects directory and
reload the project, things should be fixed.

AliR.

Hello AliR and thanks for the quick reply! That was a good tip you
suggested and I'm sure it will be useful. However, I think I might have
solved my problem.

I thought that when you, using the resource editor, added a (control)
variable something "magical" under the hood happened (but I wasn't sure
what it was), so you had to do it that way if you want to have dynamic
data exchange. However, if you already have a dialog class that you want
to convert from using GetDlgItem(), you don't have to do something in
the resource editor to set up dynamic data exchange (hope that's the
correct the term). You do, however, have to call CDialog's
OnInitDialog() if you have overridden OnInitDialog in your dialog class
or DoDataExchange will not be called. I had forgotten to call
CDialog::OnInitDialog and soon as I added that call it worked, my
DoDataExchange was called (it wasn't called before). This has been a
very good lesson for me.

However, it brings me something I've been thinking about: For which
member functions should always make sure to call the base
implementation? I'm unsure about that.

- Eric
[snip]