Re: User Interface stops working

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 17 Jul 2007 22:33:48 -0700

Message-ID:

<D90DAEC7-AB2D-4F3B-8FF5-601AEAD06436@microsoft.com>

Could be a memory leak or perhaps the control is starting a thread for each
time it is created? You could look in task manager at the memory usage
and/or GDI resources or something like that to see if you notice some number
growing out of the ordinary.

Tom

"RS" <RS@discussions.microsoft.com> wrote in message
news:8999A58B-FDF5-4D18-87FC-F2E073DA3D78@microsoft.com...

Hi,

I am developing an application using MFC in MS Visual Studio 2005. I
created
a single dialog based MFC application.

The framework generates the code required to create the single dialog box.
In the InitInstance() function, the dialog box is created using DoModal()
to
create a modal dialog box.

I have added a tab control in the main dialog box. I have 5 tabs. For each
tab, I create a dialog box using MFC. Each dialog box contains various
buttons and controls. One dialog box contains an ActiveX control object.

When a particular tab is selected by the user, the corresponding dialog is
displayed in the tab window area.

The program works fine when it is launched. But after 5 minutes or so, the
tab switching becomes slower. After another 2 minutes or so, the dialog
corresponding to a tab takes more time to display various buttons and
controls.

Then, after another few minutes, the main dialog box breaks. Various
dialog
boxes corresponding to various tabs are then displayed in areas outside
the
tab window area. The window stops responding to user inputs. The cancel
button also does not work any more. Then the application has to be
terminated
from the task manager.

Does anyone know why this is happening? What should I do to correct this
problem?

I thank you very much in advance for your time and for your help.

Regards,

RS