MFC: How do I add ToolTip to a CTabView tab located in a CSplitterWnd?

Hi,

Using MFC, I want to add a tooltip to a tab on a CTabView.  I don't care if it's just the tab itself or the full view.  The particular tab is a CHtmlView and is in one of the panes of a CSplitterWnd.    So I have the CMainFrame that creates a couple CSplitterWnd items on OnCreateClient  where one of those panes uses a CTabView.

I tried using a CToolTipCtrl created in CMainFrame::OnCreateClient after adding the CSplitterWnd for the CTabView since the CTabView::OnCreate adds the tabs but nothing seemed to work.

TIA!!

I implemented the suggestion on page 941-942 in the book Programming Windows with MFC second Edition to derive from CToolTipCtrl and implement new functions that use TTF_SUBCLASS.   I tried it with in the CMyTabView on the client area of the tabs.  It sort of works with the Edit and Rich Views but not HTML view.  By sort of, I mean, it works maybe twice then doesn't come up again.  Here's that part:

    int CMyTabView::OnCreate(LPCREATESTRUCT lpCreateStruct)
    {
      if (CTabView::OnCreate(lpCreateStruct) == -1)
        return -1;
    
      AddView(RUNTIME_CLASS(CMyEditView), _T("Tab1"));
      AddView(RUNTIME_CLASS(CMyRichView), _T("Tab2"));
      AddView(RUNTIME_CLASS(CMyHtmlView), _T("Tab3"));
    
      m_ToolTip.Create(this, TTS_ALWAYSTIP);
      
      CMFCTabCtrl &tabctrl=GetTabControl();
      for (int i=0; i < tabctrl.GetTabsNum(); ++i) {
        m_ToolTip.AddWindowTool(tabctrl.GetTabWnd(i), _T("Test Tool Tip"));
      }
      
      return 0;
    }

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Not working on the HTML View was fine because I really just want it on the tab.   So I change it up and got rid of the stuff above (except the .Create) and added:

    void CMyTabView::OnInitialUpdate()
    {
      CTabView::OnInitialUpdate();
      
      CMFCTabCtrl &tabctrl=GetTabControl();
      CRect rc;
      tabctrl.GetTabsRect(rc);
      if (!rc.IsRectEmpty()) {
        m_ToolTip.AddRectTool(&tabctrl, _T("test tip"), &rc, (UINT_PTR) tabctrl.GetSafeHwnd());
      }
    }

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But that doesn't work.  It tried using `this` as well, still didn't work.  So while something worked, still can't get it to work on the tabs?  Any ideas?