Re: Exit application (SDI) while Dialog or MessageBox is shown?

From:

David Lowndes <DavidL@example.invalid>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 12 Aug 2008 20:51:25 +0100

Message-ID:

<2po3a4dvea3a6cg78sbdhjo3d0dnn86b4r@4ax.com>

My SDI application have a tray icon with context menu with command
Exit (ID_APP_EXIT)

When I show any Dialog or Message Box (Modal) the application have no
way to be closed (because MainFrm is disabled) except from Tray
Context Menu.

But when I exit that way the application crash because context in
which dialog is shown (and wait to me closed) is destroyed :(

What I can do to exit application correctly :( ?

It's not normal to allow an application to exit when a modal dialog
(or message box) is shown, so I'd recommend that you disable your
notification menu exit command when a modal dialog is shown.

If you really want to allow exiting while a dialog is shown, you could
do something like this in the handler of your exit command:

HWND hActive = GetActiveWindow();

if ( ( hActive != NULL ) && ( hActive != hFrameWnd ) )
{
PostMessage( hActive, WM_CLOSE, 0, 0 );
}

.... to close the active window (the dialog), then post a user defined
message back to yourself to complete the exit once the dialog has
closed.

Dave