Bug in office 2013 tooltips + solution

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   Hello

Titles are truncated if description is very short.
Your can reproduce it easy in calendar sample! Just switch to office 2013 style and change the description of a ribbon button to a short text.

Please move Tooltip-Classes from .cpp to .h! So it's not possible to derive class to fix it myself.

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Because codejock don't unlock my solution for other users , I will attach my solution to this thread.

.h

class CXTPBugfixedToolTipContext : public CXTPToolTipContext
{
    class CBugfixedOffice2013ToolTip;
    friend CBugfixedOffice2013ToolTip;

    public:
        virtual CWnd* CreateToolTip(CWnd* pOwner);
};

.cpp

class CXTPBugfixedToolTipContext::CBugfixedOffice2013ToolTip : public CXTPToolTipContextToolTip
{
public:
    CBugfixedOffice2013ToolTip(CXTPToolTipContext* pContext)
        : CXTPToolTipContextToolTip(pContext)
    {
    }

protected:
    virtual CSize GetToolSize(TOOLITEM* lpToolInfo);
    virtual void DrawBackground(CDC* pDC, TOOLITEM* lpToolInfo, CRect rc);
    virtual void DrawEntry(CDC* pDC, TOOLITEM* lpToolInfo, CRect rc);
};

CSize CXTPBugfixedToolTipContext::CBugfixedOffice2013ToolTip::GetToolSize(TOOLITEM* lpToolInfo)
{
    CClientDC dc(this);

    CXTPBugfixedToolTipContext* pFriendContext = static_cast<CXTPBugfixedToolTipContext*>(m_pContext);

    CFont* pOldFont = dc.SelectObject(&pFriendContext->m_fnt);

    CString str = GetToolText(lpToolInfo);

    if (str.IsEmpty())
    {
        dc.SelectObject(pOldFont);
        return CSize(0);
    }

    int nMaxTipWidth = GetMaxTipWidth();
    BOOL bDrawTitle = !m_strTitle.IsEmpty();

    CRect rcMargin = m_pContext->GetMargin();
    CSize szMargin;
    if (bDrawTitle)
    {
        szMargin.cx = 12 + rcMargin.left + rcMargin.right + 12;
        szMargin.cy = 7 + rcMargin.top + rcMargin.bottom + 7;
    }
    else
    {
        szMargin.cx = 5 + rcMargin.left + rcMargin.right + 5;
        szMargin.cy = 5 + rcMargin.top + rcMargin.bottom + 5;
    }

    DWORD dwFlags = DT_NOPREFIX | DT_EXPANDTABS;

    CSize szTitle(0, 0);

    if (bDrawTitle)
    {
        CXTPFontDC fntTitle(&dc, &pFriendContext->m_fntTitle);

        CRect rcTitle(0, 0, 0, 0);
        dc.DrawText(m_strTitle, rcTitle, dwFlags | DT_CALCRECT | DT_SINGLELINE);

        szTitle = CSize(rcTitle.Width(), rcTitle.Height() + 6);
    }

    CRect rcText(0, 0, nMaxTipWidth - szMargin.cx, 0);

    if (bDrawTitle && szTitle.cx > nMaxTipWidth)
        szTitle.cx = nMaxTipWidth;

    dc.DrawText(str, rcText, dwFlags | DT_CALCRECT | DT_WORDBREAK);
    dc.SelectObject(pOldFont);

    CSize szText = rcText.Size();

    CSize sz = szText;
    if (bDrawTitle)
    {
        sz.cx = max(sz.cx, szTitle.cx);
        sz.cy += szTitle.cy;
    }

    sz.cx += szMargin.cx;
    sz.cy += szMargin.cy;
    return sz;
}

void CXTPBugfixedToolTipContext::CBugfixedOffice2013ToolTip::DrawBackground(CDC* pDC, TOOLITEM* /*lpToolInfo*/, CRect rc)
{
    pDC->FillSolidRect(&rc, RGB(0xff, 0xff, 0xff));

    const COLORREF clrBorder = RGB(190, 190, 190);
    pDC->Draw3dRect(rc, clrBorder, clrBorder);
}

void CXTPBugfixedToolTipContext::CBugfixedOffice2013ToolTip::DrawEntry(CDC* pDC, TOOLITEM* lpToolInfo, CRect rc)
{
    CXTPBugfixedToolTipContext* pFriendContext = static_cast<CXTPBugfixedToolTipContext*>(m_pContext);

    CString str = lpToolInfo->strCaption;

    rc.DeflateRect(m_pContext->GetMargin());

    DWORD dwFlags = DT_NOPREFIX | DT_EXPANDTABS;
    BOOL bLayoutRTL = lpToolInfo->hwnd && GetWindowLong(lpToolInfo->hwnd, GWL_EXSTYLE) & WS_EX_LAYOUTRTL;

    if (bLayoutRTL)
    {
        dwFlags |= DT_RTLREADING | DT_RIGHT;
    }

    int clrTextOld = pDC->SetTextColor(RGB(93, 93, 93));

    BOOL bDrawTitle = !m_strTitle.IsEmpty();
    if (bDrawTitle)
    {
        rc.DeflateRect(12, 7, 12, 7);

        CXTPFontDC fnt(pDC, &pFriendContext->m_fntTitle);
        CRect rcTitle(rc.left, rc.top, rc.right, rc.bottom);
        pDC->DrawText(m_strTitle, rcTitle, dwFlags | DT_SINGLELINE);

        rc.top += pDC->GetTextExtent(m_strTitle).cy + 6;
    }
    else
        rc.DeflateRect(5, 5, 5, 5);

    pDC->DrawText(str, rc, dwFlags | DT_WORDBREAK);
    pDC->SetTextColor(clrTextOld);
}

CWnd* CXTPBugfixedToolTipContext::CreateToolTip(CWnd* pOwner)
{
    if (m_toolStyle == xtpToolTipOffice2013)
        return new EXTPBugfixedToolTipContext::CBugfixedOffice2013ToolTip(this);
    else
        return __super::CreateToolTip(pOwner);
}

Enjoy! 