How to change rect tool CToolTipCtrl?

Question

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In the derived CDockablePane class, I have a CTreeCtrl member for which I add ToolTip to OnCreate ():

int CMyPane::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CDockablePane::OnCreate(lpCreateStruct) == -1)
        return -1;

    const DWORD dwStyle = WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN |
        TVS_CHECKBOXES | TVS_DISABLEDRAGDROP | TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT |
        TVS_INFOTIP | TVS_NOHSCROLL | TVS_SHOWSELALWAYS;

    if(!m_tree.Create(dwStyle, m_treeRect, this, TREECTRL_ID) ) { return -1; }

    m_pToolTip->AddTool(&m_tree, LPSTR_TEXTCALLBACK, &m_treeRect, TREECTRL_ID);
    m_tree.SetToolTips(m_pToolTip);


    return 0;
}

I need to call AddTool () with all optional parameters, because the default values ​​will not work with CDockablePane.
m_treeRectis a member CRectestablished (0, 0, 10000, 10000)in CTor. This is really ugly.

I would like to adjust the rectangle of the tool whenever the size changes m_tree.
So I tried some things in CMyPane::OnSize(), but none of them worked:

• Call m_pToolTip->GetToolInfo()then change CToolInforect element then callSetToolInfo()
• Call m_pToolTip->SetToolRect()

How should this be done?

Answer 1

, DelTool AddTool OnSize:

void CMyPane::OnSize(UINT nType, int cx, int cy)
{
    CDockablePane::OnSize(nType, cx, cy);

    if (m_pToolTip != NULL)
    {
        m_pToolTip->DelTool(&m_tree, TREECTRL_ID);

        CRect treeRect;
        m_tree.GetClientRect(treeRect);

        m_pToolTip->AddTool(&m_tree, LPSTR_TEXTCALLBACK, &treeRect, TREECTRL_ID);
    }
}

Answer 2

int CMyPane::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CDockablePane::OnCreate(lpCreateStruct) == -1)
        return -1;

    const DWORD dwStyle = WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN |
        TVS_CHECKBOXES | TVS_DISABLEDRAGDROP | TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT |
        TVS_INFOTIP | TVS_NOHSCROLL | TVS_SHOWSELALWAYS;

    if(!m_tree.Create(dwStyle, m_treeRect, this, TREECTRL_ID) ) { return -1; }

    m_pToolTip->AddTool(&m_tree, LPSTR_TEXTCALLBACK, &m_treeRect, TREECTRL_ID);
    m_tree.SetToolTips(m_pToolTip);


    return 0;
}