Exception in IAccessibleProxyImpl from CMFCPropertyGridCtrl

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I am working with an MFC Dialog Application built with VS 2010
My application uses CPropertySheet with multiple CPropertyPage's and on one of them I am using a CMFCPropertyGridCtrl. The Dialog associated with that page handles PreTranslateMessage's.

When running this code on a Windows 7 Touch Screen computer, I get the following exception in the PreTranslateMessage handling a WM_MOUSEDOWN for the CMFCPropertyGridCtrl which eventually calls IsDialogMessaag():

C++

mfc100ud.dll!ATL::IAccessibleProxyImpl<ATL::CAccessibleProxy>::get_accParent(IDispatch * * ppdispParent)  Line 69   C++

// Delegate to standard helper?
HRESULT CWnd::get_accParent(IDispatch **ppdispParent)
{
    ASSERT(m_pStdObject != NULL);
    return m_pStdObject->get_accParent(ppdispParent);
}

The problem is that ppdispParent points to a NULL.
I have no idea what should be done to fix this???
Can anyone help explain this?

Posted 4-Oct-12 7:09am

Bob Pryor

Updated 4-Oct-12 7:17am

v2

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Richard MacCutchan · Answer 1 · 2012-10-04T07:31:00

Solution 1

Please do not post the same question in multiple forums; you alread posted this in the C/C++/MFC forum[^].

Posted 4-Oct-12 7:31am

Richard MacCutchan

Comments

Bob Pryor 4-Oct-12 17:11pm

I'm new to posting questions and when I went to 'quick answers' and looked at all unanswered mine wasn't there so didn't look like the original was posted where anyone would see it.

Richard MacCutchan 5-Oct-12 3:26am

All questions get seen, but not all questions get answered.