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qwtchangelog - What's new in Qwt 6.3

NAME  QwtPainter  QwtPlotCurve  QwtSeriesData  QwtPlotIntervalCurve  Bugfixes/Adjustments 

NAME

qwtchangelog − What’s new in Qwt 6.3

QwtPainter

QwtPainter::polylineSplitting has been reenabled. Unfortunately the Qt raster paint engine still has serious performance issues with rendering long polylines.

QwtPlotCurve

- QwtPlotCurve::adjacentPoint
for monotonic curves: using a binary search algo

- QwtPlotCurve::interpolatedValueAt
for monotonic curves: using a binary search algo

QwtSeriesData

- wrong inheritances fixed
- firstSample, lastSample added

QwtPlotIntervalCurve

QwtPlotIntervalCurve::TubeAsLines mode added. A performance optimization
for rendering huge datasets.

Bugfixes/Adjustments

Bugfixes/Adjustments - often needed because of new Qt developments


Updated 2026-06-01 - jenkler.se | uex.se