Re: Multiple modal windows with the same parent
"marekdec" <marekdec@gmail.com> wrote in message
news:6d208b6e-ceb0-4c54-9b8c-0d9c4e9cc50e@n20g2000hsh.googlegroups.com...
This is an old, and I believe, well known problem.
You run into it every time you have two modal windows running at the
same time. Closing one of them will always enable their parent, which
is incorrect behaviour as the parent should stay disabled as long as
there is any modal window shown.
[Refer to following post: news:OTyfwfF5CHA.972@TK2MSFTNGP11.phx.gbl]
I found a great description of the problem and a workaround here:
http://www.voidnish.com/Articles/ShowArticle.aspx?code=notmodaldialogs
Though, workaround turned out not to be an equivalent solution.
The problem lays in Win32 EndDialog function which enables parent
window regardless of its previous state. Workaround suggested by
voidnish is to remove the call to win32 EndDialog from
CDialog::EndDialog. It works perfectly for most of the windows, though
it does not for some of them. I cannot figure out why the behaviour is
different.
I create all my modal windows using CDialog::DoModal method. After
applying the workaround, some of my MFC modal windows dissapear and
some of them do not close.
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++
It appears that EndModalLoop is not enough
to close a modal window. I cannot figure out how win32 EndDialog
function works either (btw. is there any chance to see its
implementation?).
I presume it sends some message to the modal window.
Thank you so much for your help,
Marek
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