Re: MFC 9 , the next issue

From:
Scot T Brennecke <ScotB@Spamhater.MVPs.org>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 14 Jul 2009 01:26:39 -0500
Message-ID:
<#0c7MwEBKHA.4168@TK2MSFTNGP05.phx.gbl>
Rick Ruhl wrote:

Im getting a ASSERT on File/New

Code was changed as follows:

CWinApp to CWinAppEx
CMDIChildWnd to CMDIChildWndEx
CMDIFrameWnd toCMDIFrameWndEx

etc etc

I do the following

m_pDocTemplate = new CMultiDocTemplate(
IDR_DXTERMTYPE,
RUNTIME_CLASS(CDXTermDoc),
RUNTIME_CLASS (CSession), // csession is the CMDIChildWndEx
RUNTIME_CLASS(CTextView));
m_pDocTemplate->SetContainerInfo(IDR_MAINFRAME);
AddDocTemplate(m_pDocTemplate);

CSession does have a splitter windows in it. CMysplitter derived from
CSplitterWndEx

So when I do a file/new I can get to the constructor of CSession::CSession
and trace through that, but then I get an assert
in winmdi.cpp at line 504, which is

ASSERT(::IsWindow(pParentWnd->m_hWndMDIClient));

All this worked before I moved to the new classes, have I missed anything?

Thanks
Rick


Well, the assertion failure implies that the MDI client window wasn't successfully created. So, put a breakpoint in the
CreateClient method (also in winmdi.cpp, around line 140) and find out what's happening to prevent it from being created.

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