Dialog AND a custom Toolbar

Hi,

I used some code from the book Visual C++ 4.0 HowTo, to add a toolbar
to my dialog.
The code is :

void CClientToolBar::OnNeedText (NMHDR* pNotifyStruct, LRESULT*
result)
{
    LPTOOLTIPTEXT lpTipText = (LPTOOLTIPTEXT) pNotifyStruct;
    UINT nStringID = lpTipText->hdr.idFrom;

    TCHAR szFullText[256];
    CString strTipText;
    AfxLoadString(nStringID,szFullText);
    AfxExtractSubString(strTipText,szFullText,1,'\n');

    strcpy(lpTipText->lpszText,strTipText);
    *result = TRUE;
}

struct CToolBarData
{
    WORD wVersion;
    WORD wWidth;
    WORD wHeight;
    WORD wItemCount;

    WORD* items()
    { return (WORD*) (this+1); }
};

BOOL CClientToolBar::LoadToolBar (UINT nIDResource)
{
    ASSERT_VALID(this);
    ASSERT(nIDResource != 0);

    HINSTANCE hInst = AfxGetInstanceHandle();
    HRSRC hRsrc
= ::FindResource(hInst,MAKEINTRESOURCE(nIDResource),RT_TOOLBAR);

    if(hRsrc == NULL)
        return FALSE;

    HGLOBAL hGlobal = LoadResource(hInst,hRsrc);
    if (hGlobal == NULL)
        return FALSE;

    CToolBarData* pData = (CToolBarData*) LockResource(hGlobal);
    if(pData == NULL)
        return FALSE;
    ASSERT(pData->wVersion == 1);

    if(AddBitmap(pData->wItemCount , nIDResource) == -1)
    {
        UnlockResource(hGlobal);
        FreeResource(hGlobal);
        return FALSE;
    }

    UINT* pItems = new UINT[pData->wItemCount ];
    for (int i = 0; i< pData ->wItemCount ; i++)
        pItems[i] = pData->items ()[i];
    BOOL bResult = SetButtons(pItems,pData->wItemCount );
    delete[] pItems;

    if(bResult)
    {
        CSize sizeImage(pData->wWidth , pData->wHeight);
        CSize sizeButton(pData->wWidth +14, pData->wHeight + 7);

        SetBitmapSize(sizeImage);
        SetBitmapSize(sizeButton);
    }

    UnlockResource(hGlobal);
    FreeResource(hGlobal);

    return bResult;
}

BOOL CClientToolBar::SetButtons(const UINT* lpIDArray, int nIDCount)
{
    ASSERT_VALID(this);
    ASSERT(nIDCount >= 1);
    ASSERT(lpIDArray == NULL || AfxIsValidAddress(lpIDArray, sizeof(UINT)
*nIDCount,FALSE));

    int nCount = GetButtonCount();
    while(nCount)
        VERIFY(DeleteButton(0));

    if(lpIDArray != NULL)
    {
        TBBUTTON button; memset(&button, 0, sizeof(TBBUTTON));
        int iImage = 0;
        for(int i = 0; i<nIDCount; i++)
        {
            button.fsState = TBSTATE_ENABLED;
            if((button.idCommand = *lpIDArray++) == 0)
            {
                button.fsStyle = TBSTYLE_SEP;
                button.iBitmap = 8;
            }
            else
            {
                button.fsStyle = TBSTYLE_BUTTON;
                button.iBitmap = iImage++;
            }
            if(!AddButtons(1,&button))
                return FALSE;
        }
    }
    else
    {
        TBBUTTON button; memset(&button,0,sizeof(TBBUTTON));
        button.fsState = TBSTATE_ENABLED;
        for(int i = 0; i<nIDCount; i++)
        {
            ASSERT(button.fsStyle == TBSTYLE_BUTTON);
            if(!AddButtons(1,&button))
                return FALSE;
        }
    }

    return TRUE;
}

void CClientToolBar::OnToolbarChat()
{
    // TODO: Add your command handler code here

THIS GETS CALLED

}

void CClientToolBar::OnUpdateToolbarChat(CCmdUI* pCmdUI)
{
    // TODO: Add your command update UI handler code here

THIS IS NEVER CALLED !!!!

}

In the dialog OnInitDialog():

    CRect r(0,0,0,0);

    o_ClientToolBar.Create (WS_VISIBLE|WS_CHILD|CCS_TOP|CCS_ADJUSTABLE |
TBSTYLE_TOOLTIPS,r,this,IDR_TOOLBAR1);
    o_ClientToolBar.LoadToolBar (IDR_TOOLBAR1);

    o_ClientToolBar.AutoSize ();

The Toolbar is added but the UPDATE_COMMAND_UI message is never
called.
What do i have to do to make this work ?
I want to SetCheck() the toolbar button when pressed.