Bad pointer exception in Debug mode.. CView in CDockable pane MFC Feature pack

Question

Hi
I have attached a CView in  CDockablePane and it works fine
in Release mode but it throws bad memory pointer in
debug mode while closing the application.(Crashing during close).
Please advise...
Find the code below how I had attached the View to Dockable pane
//===================================================
BOOL COutputWnd::AddView ( CRuntimeClass *pRuntimeViewClass, LPCTSTR lpcszTitle, int nIconIndex,int nTabIndex )
if ( !pRuntimeViewClass )
return FALSE;
int nTabIndex = 0;
CWnd *pWnd = NULL;
CCreateContext newContext;
CTestView *pView = NULL;
newContext.m_pCurrentDoc = NULL;
newContext.m_pNewViewClass = pRuntimeViewClass;
newContext.m_pNewDocTemplate = NULL;
TRY
pWnd = ( CWnd* ) pRuntimeViewClass->CreateObject ( );
if ( NULL == pWnd )
AfxThrowMemoryException ( );
CATCH_ALL ( e )
TRACE0 ( "Out of memory creating a view\n" );
return FALSE;
END_CATCH_ALL
if ( !pWnd->Create ( NULL, NULL, WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, CRect ( 0, 0, 0, 0 ), &m_wndTabs, AFX_IDW_PANE_FIRST + nTabIndex, NULL ) )
TRACE0 ( "Create view failed\n" );
return FALSE;
m_wndTabs.AddTab( pWnd, _T("Browser Tab"), (UINT)m_wndTabs.GetTabsNum());
pWnd->SendMessage ( WM_INITIALUPDATE );
pWnd->SetOwner ( this );
pView = ( CTestView* ) pWnd;
if ( NULL != pView )
pView->Navigate2 ( lpcszTitle );
return TRUE;
}//===================================================
Thanks
Shajeer

Answer 1

Hi
I am calling the AddView from OnCreate of COutputWnd as below
int COutputWnd::OnCreate(LPCREATESTRUCT lpCreateStruct){
if (CDockablePane::OnCreate(lpCreateStruct) == -1) return -1;
m_Font.CreateStockObject(DEFAULT_GUI_FONT);
CRect rectDummy;
rectDummy.SetRectEmpty();
// Create tabs window:
if (!m_wndTabs.Create(CMFCTabCtrl::STYLE_FLAT, rectDummy, this, 1)){
TRACE0("Failed to create output tab window\n");
return -1; // fail to create}
AddView( RUNTIME_CLASS(CBrowserView),_T("www.google.com"),-1,0);
return 0;
Find below the call stack when it crashes
Bad_Pointer.exe!AfxAssertValidObject(const CObject * pOb=0x00b7e838, const char * lpszFileName=0x014c58c8, int nLine=2372)  Line 99 + 0xa bytes C++
  Bad_Pointer.exe!CFrameWnd::AssertValid()  Line 2373 C++
  Bad_Pointer.exe!CMDIFrameWnd::AssertValid()  Line 384 C++
  Bad_Pointer.exe!CMainFrame::AssertValid()  Line 271 C++
  Bad_Pointer.exe!AfxAssertValidObject(const CObject * pOb=0x00b70068, const char * lpszFileName=0x014d5404, int nLine=288)  Line 107 C++
  Bad_Pointer.exe!CBasePane::GetParentMiniFrame(int bNoAssert=0)  Line 291 C++
  Bad_Pointer.exe!CDockablePane::OnDestroy()  Line 2579 + 0x12 bytes C++
  Bad_Pointer.exe!CTabbedPane::OnDestroy()  Line 215 C++
  Bad_Pointer.exe!CWnd::OnWndMsg(unsigned int message=2, unsigned int wParam=0, long lParam=0, long * pResult=0x001ae47c)  Line 2042 C++
  Bad_Pointer.exe!CWnd::WindowProc(unsigned int message=2, unsigned int wParam=0, long lParam=0)  Line 1755 + 0x20 bytes C++
  Bad_Pointer.exe!CBasePane::WindowProc(unsigned int message=2, unsigned int wParam=0, long lParam=0)  Line 1011 + 0x14 bytes C++
  Bad_Pointer.exe!AfxCallWndProc(CWnd * pWnd=0x00b90af0, HWND__ * hWnd=0x000114d8, unsigned int nMsg=2, unsigned int wParam=0, long lParam=0)  Line 240 + 0x1c bytes C++
  Bad_Pointer.exe!AfxWndProc(HWND__ * hWnd=0x000114d8, unsigned int nMsg=2, unsigned int wParam=0, long lParam=0)  Line 403 C++
  user32.dll!7787f8d2()  
  [Frames below may be incorrect and/or missing, no symbols loaded for user32.dll] 
  user32.dll!7787f794()  
  user32.dll!7787f73d()  
  user32.dll!77880817()  
  user32.dll!77880a65()  
  ntdll.dll!776f99ce()  
  user32.dll!778714c8()  
  Bad_Pointer.exe!CMDIFrameWndEx::OnDestroy()  Line 777 C++
  90909090()
Thanks!
Shaj