Re: using Document object from CFrameWnd

From:

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 23 Jan 2009 13:41:57 -0500

Message-ID:

<evoyRpYfJHA.1288@TK2MSFTNGP02.phx.gbl>

When you create multiple views in a splitter you typically do not need or
want the default view that is created in InitInstance. You can change the
call to CSingleDocTemplate by passing a NULL as the view class, to not
create that default view.

"nexolite" <nexolite@discussions.microsoft.com> wrote in message
news:7E3ACBB6-409D-480D-9547-11752C303D8C@microsoft.com...

I have created a CFameWnd as a view in a split window but I am facing a
serious problem, I am creating a toolbar in that window ,that toolbar
appears correctly but the background is the CFormView which was the
default
window(as specified in the CSingleDocTemplate() in InitInstance() )!!

after clicking close ,there is a Access violation while trying to call

if (!AfxIsValidAddress(pOb, pOb->GetRuntimeClass()->m_nObjectSize, FALSE))
in objcore.cpp

and it is the __vfptr of pOb whose address is shown to access violated.

PLEASE HELP ME.

"David Wilkinson" wrote:

Giovanni Dicanio wrote:

"nexolite" <nexolite@discussions.microsoft.com> ha scritto nel
messaggio
news:B717A550-4726-4ED5-9ABB-548719FD6F7E@microsoft.com...

I have created a MFC SDI app in which CFrameWnd derived classis used
as a view.
How can I get a pointer to the document object?

CFrameWnd::GetActiveDocument() ?

Giovanni:

If the CFrameWnd is just "used as a view", will it be hooked up correctly
to MFC
so that GetActiveDocument() will work? I wouldn't think so.

I would have thought you would need to do something like

CFrameWnd* pFrame = (CFrameWnd*)AfxGetMainWnd();
CMyDocument* pDoc = (CMyDocument*)pFrame->GetActiveDocument();

or maybe better pass a CMyDocument* pointer to the new CFrameWnd and
store it in
a member variable,

--
David Wilkinson
Visual C++ MVP

--
Scott McPhillips [VC++ MVP]