Increase legend icon size?

[Uwe]

You have to do something like this:

void YourCurve::updateLegend( QwtLegend *legend ) const
{
    QwtPlotCurve::updateLegend(legend);
    QwtLegendItem *lgdItem = 
        dynamic_cast<QwtLegendItem*>(legend->find( this ));
    if ( lgdItem )
        lgdItem->setIdentifierSize( ... );
}

void YourCurve::updateLegend( QwtLegend *legend ) const
{
    QwtPlotCurve::updateLegend(legend);
    QwtLegendItem *lgdItem = 
        dynamic_cast<QwtLegendItem*>(legend->find( this ));
    if ( lgdItem )
        lgdItem->setIdentifierSize( ... );
}

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I know this is not very comfortable ( worse than in Qwt 5.x ), but it needed to be changed for the new type of plot items, that also need to be displayed on the legend and I didn't want to lose too much time on this less important topic.

Hope I will have something better in future Qwt versions,

Uwe

[torrentss]

Thanks a lot!

I had to insert an extra call to QwtPlotItem::updateLegend(legend); at the end of YourCurve::updateLegend(), otherwise it wouldn't use the specified size for symbol-style legend items (lines were ok).