Re: Send message issue

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);