Question : OnToolTipNotify() not called in CView class

I want to popup tooltips when hovering mouse in a CView class. I've had luck showing tooltips before in a CFrameWnd class before, but maybe there's a difference when it's a CView? Usually tooltips takes three simple steps:

This is what I've got:

1) Enable tooltips:

void CEventView::OnInitialUpdate()
{
      CView::OnInitialUpdate();
      EnableToolTips();
}

2) Override OnToolHitTest()

int CEventView::OnToolHitTest( CPoint PointCP, TOOLINFO* pTI ) const
{
      pTI->hwnd = GetSafeHwnd();
      pTI->uFlags = 0;
      pTI->lpszText = LPSTR_TEXTCALLBACK;
//Do some clever hittest, and put index if rectangle that was hit into TOOLINFO
      pTI->uId = 1; //<-- index of rect that was hit
      return 1;
}

3) Add TTN_NEEDTEXTW to the message map

BEGIN_MESSAGE_MAP(CEventView, CView)
      ON_NOTIFY(TTN_NEEDTEXTW, 0, OnToolTipNotify)
      ON_NOTIFY(TTN_NEEDTEXTA, 0, OnToolTipNotify)
END_MESSAGE_MAP()

void CEventView::OnToolTipNotify(NMHDR *pNMHDR, LRESULT *pResult)
{
      UINT uiID = pNMHDR->idFrom-1; //<-- index of the rect that was hit
      //what happends here is not important for the question,
      //OnToolTipNotify() is never called - question is why?
}

I have OnToolHitTest() called, but not OnToolTipNotify(), why is that?

Answer : OnToolTipNotify() not called in CView class

int CMyView::OnToolHitTest( CPoint point, TOOLINFO* pTI ) const
{
      pTI->hwnd = GetSafeHwnd();
     pTI->uFlags = 0;
     pTI->lpszText = LPSTR_TEXTCALLBACK;
//Do some clever hittest, and put index if rectangle that was hit into TOOLINFO
     pTI->uId = 1; //<-- index of rect that was hit

       pTI->rect.left = 0;
       pTI->rect.top = 0;
       pTI->rect.right = 300;
       pTI->rect.bottom = 300;

     return 1;
}
This calls back for tip text (to the VIEW) when cursor is inside the specified rectangle (0,0,300,300)