Re: Multiple modal windows with the same parent

From:
"Mark Salsbery [MVP]" <MarkSalsbery[MVP]@newsgroup.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 29 Jan 2008 16:19:37 -0800
Message-ID:
<EBBF3867-9036-498D-8141-C74BDC2859EF@microsoft.com>
"marekdec" <marekdec@gmail.com> wrote in message
news:6bbc58d3-4d46-4526-a380-231fc8f80f41@d70g2000hsb.googlegroups.com...

On Jan 28, 12:41 pm, "Mark Salsbery [MVP]"
<MarkSalsbery[MVP]@newsgroup.nospam> wrote:

If you put a breakpoint on the DestroyWindow() call in
CDialog::DoModal(),
does execution stop there for every dialog closed?

Also, are all these dialogs created on the same thread?

Mark

--
Mark Salsbery
Microsoft MVP - Visual C++


I am using VS 2003 and MFC 7.1. My project uses modal dialogs
excessively.

DestroyWindow() is not being called. It seems like ModalLoop could not
be finished. Though EndModalLoop is invoked and WM_NULL message is
sent. And what is weird another button handler calls EndDialog in the
same way and this time it succeeds.
It works perfectly when I call winapi EndDialog.


I can't imagine why, since that's the wrong API to close a modeless dialog,
as pointed out by Nish in his article.

These dialogs are all created on the same thread, right?
If so, then having two modal dialogs with the same parent shouldn't be an
issue for MFC design since only a modal dialog can spawn another modal
dialog, in which case the second dialog's parent would be the first dialog
window. In that case, the MFC code should work fine.

Also...is this only an issue when closing the dialogs in the same order they
were created??

Mark

--
Mark Salsbery
Microsoft MVP - Visual C++

I just wonder what
else this does. Is there any possibility to look into winapi EndDialog
function source code? So far I know it just cannot be omitted like
Nish says. Apparently it has some other functionality except for
enabling the parent. And that would be a key to this problem.

Thanks for help once again,
Marek

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