Cannot move QwtPlotMarker

[eehmke]

I want to mark one selected position in my QwtPlot graph. This position should be movable, like moveMark (x, y); I tried to use QwtPlotMarker, but it is just displayed at the first position and will not move. How can this be solved? The mark can be a cross, or an arrow pointing to the selected point in the graph.

[eehmke]

Hello, I could solve this by calling plot.replot() again after each update of the marker.