Re: Send message issue

From:
"Ajay Kalra" <ajaykalra@yahoo.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
8 Jun 2006 18:58:17 -0700
Message-ID:
<1149818297.807037.296460@h76g2000cwa.googlegroups.com>
You still have not shown where userDlg has been initialized/assigned.
That is the object in question that is causing problems.

----
Ajay

nicetom786@yahoo.com wrote:

Yes Jeff,

I think you are close to my problem

Here I assigned the in onitialupdate OF CFormView

m_myCtrlTab.m_tabPages[0]= tabUserData ;

where m_tabpages is an array of CDialog in tab control

and when I use this onNMClick of ListCtrlOne

mv->m_myCtrlTab.m_tabPages[0]->SendMessage(WM_INSERT_ITEMS,0,0);
i am able to handle the user message in tabUserData Dlg

When I use the
mv->m_myCtrlTab.userDlg->m_userLisTCtrl->SendMessage(WM_INSERT_ITEMS,0,0);
I am getting the same error message.

I think this is bad design .I will make Daialog to do something when I
get the message and while NM_CLICK etc will be handles by the
subclassed control ?
What say ?
Advise me for a good design.
thanks

Jeff Partch [MVP] wrote:

<nicetom786@yahoo.com> wrote in message
news:1149805675.981831.279300@g10g2000cwb.googlegroups.com...

David:
Its not the m_ListCtrlTwo that is null.
I
Its the dialog that I get assertion .

ASSERT_VALID(mv->m_myCtrlTab.userDlg);
and goes to objcore.cpp line no 90

// check to make sure the VTable pointer is valid
ASSERT(sizeof(CObject) == sizeof(void*));
       if (!AfxIsValidAddress(*(void**)pOb, sizeof(void*), FALSE))
       {
               TRACE(traceAppMsg, 0, "ASSERT_VALID fails with illegal
vtable
pointer.\n");
               if (AfxAssertFailedLine(lpszFileName, nLine))
                       AfxDebugBreak();
               return; // quick escape
       }

Both the view and the tabcontrol are valid.
userDlg is a CDialog class inside the tab control.
userdialog was created in the onitialupdate of CFormview

CUserDataDlg *tabUserData = new CUserDataDlg();

m_myCtrlTab.m_nNumberOfPages=1;
m_myCtrlTab.m_tabCurrent=0;

tabUserData->Create(IDD_DLG_USER_DATA,&m_myCtrlTab);


Show how userDlg is or refers to the same object as tabUserData.
--
Jeff Partch [VC++ MVP]

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