Help: How to add QwtPlotMarker at a FIX position?

[jwieland]

Anybody, please?

[FelixB]

ok, next idea: you have to work with canvas pixel.

first, you have to find the pixel position where your legend should appear (remember: in pexels, (0/0) is top-left)
second, translate this position into axis values using qwtplot::transform or qwtplot::invtransform (sorry, I'm always confused which one translates in which direction...)
third, do second step after each zoom (the zoomer emits a "zoomed(...)"-signal which you can connect to a custom slot)

have fun
Felix

[Uwe]

Check the CpuPieMarker from the cpuplot example. Instead of the pie draw your legend.

Uwe