Switching views : season 2

Hi,

In my SDI application I have defined a CBaseFrame deriving from
CFrameWnd and that allow me to switch between view dynamically
created.Here is the code I suse

//CREATE_ONCE means view is create once and never deleted when switching
//CREATE_AND_DESTROY means views are deleted/recreated on switch
CBaseFrame::stViewInfo CBaseFrame::m_ViewInfo[] =
{
    { IDD_MAIN_FORM, CBaseFrame::CREATE_ONCE, AFX_IDW_PANE_FIRST + 0, NULL },
    { IDD_WELCOME_DLG, CBaseFrame::CREATE_AND_DESTROY,
AFX_IDW_PANE_FIRST + 1, NULL },
    { IDD_WIZZARD_DLG, CBaseFrame::CREATE_AND_DESTROY, AFX_IDW_PANE_FIRST
+ 2, NULL },
    { IDD_OPTIONS_DLG, CBaseFrame::CREATE_AND_DESTROY, AFX_IDW_PANE_FIRST
+ 3, NULL },
    { IDD_CNX_DLG, CBaseFrame::CREATE_AND_DESTROY, AFX_IDW_PANE_FIRST +
4, NULL },
    { IDD_SCHEDULE_DLG, CBaseFrame::CREATE_AND_DESTROY, AFX_IDW_PANE_FIRST
+ 5, NULL },
    { IDD_HISTORY_DLG, CBaseFrame::CREATE_AND_DESTROY, AFX_IDW_PANE_FIRST
+ 6, NULL },
    { IDD_ABOUT_DLG, CBaseFrame::CREATE_AND_DESTROY, AFX_IDW_PANE_FIRST +
7, NULL },
};

LRESULT CBaseFrame::OnSwitchView( WPARAM wParam, LPARAM lParam )
//CView* CBaseFrame::SwitchView( UINT a_ViewId )
{
    int iCurViewIdx = 0;
    int iNewViewIdx = 0;
    CView* pCurView = NULL;
    CView* pNewView = NULL;
    BOOL bDestroyOldView = FALSE;
    UINT ViewId = (UINT) wParam;

    //Get current active view
    pCurView = m_pFrame->GetActiveView();
    TRACE( _T("CViewMgr::SwitchView : pCurView = 0x%x\r\n"), pCurView );
    if ( pCurView == NULL)
        return 0L;

    //Get Curview and NextView index
    iCurViewIdx = GetIndexFromView( pCurView );
    iNewViewIdx = GetIndexFromId( wParam );
    if ((iCurViewIdx == -1) || (iNewViewIdx == -1))
        return 0L;

    pNewView = m_ViewInfo[iNewViewIdx].pView;

    // View is already displayed
    if ( pNewView == pCurView ){
        return 0L/*pCurView*/;
    }

    // New view is NULL - we must create it
    if ( pNewView == NULL ){
        pNewView = CreateView( ViewId, iNewViewIdx);
        TRACE( _T("pNewView = 0x%x\r\n"), pNewView );
        if (pNewView != NULL){
            // Save new created view
            m_ViewInfo[iNewViewIdx].pView = pNewView;
        }
    }//pView == NULL

    //Make sure that the document won't be destroyed when the view is
destroyed.
    //m_bAutoDelete is a public, but non-documented member of CDocument.
    CDocument* pCurrentDoc = m_pFrame->GetActiveDocument();
    pCurrentDoc->m_bAutoDelete = FALSE;

    // exchange view window ID's so RecalcLayout() works
    UINT temp = ::GetWindowLong(pCurView->m_hWnd, GWL_ID);
    ::SetWindowLong(pCurView->m_hWnd, GWL_ID,
        ::GetWindowLong(pNewView->m_hWnd, GWL_ID));
    ::SetWindowLong(pNewView->m_hWnd, GWL_ID, temp);

    // Hide Old view
    pCurView->ShowWindow(SW_HIDE);

    //OnInitialUpdate() is not called as a result of calling CreateView()
above.
    //It is not always called by the framework, so it is called here:
    pNewView->OnInitialUpdate();

    // Now show the new view
    pNewView->ShowWindow(SW_SHOW);
    m_pFrame->SetActiveView(pNewView);
    m_pFrame->RecalcLayout();
    pNewView->Invalidate();

    // try to destroy old view
    if ( m_ViewInfo[iCurViewIdx].eCreationMode == CREATE_AND_DESTROY){
        pCurView->DestroyWindow();
        m_ViewInfo[iCurViewIdx].pView = NULL;
    }

    return 0L/*pNewView*/;
}

The problem happens when I try to destroy the old view :

// try to destroy old view
    if ( m_ViewInfo[iCurViewIdx].eCreationMode == CREATE_AND_DESTROY){
        pCurView->DestroyWindow();
        m_ViewInfo[iCurViewIdx].pView = NULL;
    }

I have the following assert :

Assert wincore.cpp(windows CE) 442
LRESULT CALLBACK
AfxWndProc(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
{
    // special message which identifies the window as using AfxWndProc
    if (nMsg == WM_QUERYAFXWNDPROC)
        return 1;

    // all other messages route through message map
    CWnd* pWnd = CWnd::FromHandlePermanent(hWnd);
    ASSERT(pWnd != NULL && pWnd->m_hWnd == hWnd);

....
}