QwPlottMultiBarChart determining legend title of bar segment under cursor

[gjmontagner]

class YourChart: public QwtPlotMultiBarChart
{
    virtual void draw( QPainter *painter,
        const QwtScaleMap &xMap, const QwtScaleMap &yMap,
        const QRectF &canvasRect ) const
    {
        m_barGeometries.clear();
        QwtPlotMultiBarChart::draw( painter, xMap, yMap, canvasRect );
    }
};

class YourChart: public QwtPlotMultiBarChart
{
    virtual void draw( QPainter *painter,
        const QwtScaleMap &xMap, const QwtScaleMap &yMap,
        const QRectF &canvasRect ) const
    {
        m_barGeometries.clear();
        QwtPlotMultiBarChart::draw( painter, xMap, yMap, canvasRect );
    }
};

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Uwe

Hi Uwe!
Uh, I might be missing something. But how can I clear the lookup table if the method is const?
btw, thank you for your responses at qt forums, which I have been coming back to every once and again for the past weeks.