Re: Threading problem

From:

"Eric Margheim" <NOSPAM***eric@prism-grp.com***NOSPAM>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 5 Jul 2006 15:17:15 -0500

Message-ID:

<eE#NXAHoGHA.3424@TK2MSFTNGP02.phx.gbl>

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp> wrote in message
news:uftuoyGoGHA.4800@TK2MSFTNGP04.phx.gbl...

Eric Margheim wrote:

What should I intercept to prevent the CFormView from closing as Joe
suggested? I'm already catching OnDestroy but I'm guess that's too
late, or is it?

Sorry I just realized you mentioned the CMainFrame stuff in the other
reply. I'd like to handle this at the form view level for simplicity sake
if possible. If I have to go with the CMainFrame route I'll need to put
in some extra code to recognize the particular view type that needs this
checking. Not that difficult but a little more work and harder for
someone else to troubleshoot.

Instead of recognizing a particular view type, you might consider using
UpdateAllViews. It passes a "hint" value that you can define the meaning
of to every view.

Cool. I am about to test some new code. I was already trapping OnClose in
my CMainFrame class which is a Stingray SECWorkbook derivation.

I'm basically doing the following:

pSheet = (CPrismWorksheet*) GetActiveFrame();

if (pSheet)
{
    if (pSheet->GetActiveView()->IsKindOf(RUNTIME_CLASS(CPrismFormView)))
    {
        CPrismFormView *pView = (CPrismFormView*) pSheet->GetActiveView();

        if (pView->GetActiveThreadCount() > 0)
        {
            if (!pView->IsClosing())
            {
                pView->SetClosing();
                pView->ShowWindow(SW_HIDE);
            }
        }
        else if (pView->IsClosing() && pSheet->GetStyle())
            pSheet->GetActiveDocument()->OnCloseDocument();
    }
}

In my CFormView I send a message to the parent to close the frame when all
threads are done. Cross fingers... I'm off to debugging.