Hi Uwe,

Somehow I have tried your realtime code from this link https://github.com/GoldenCheetah/Gol...mples/realtime
In which on QwtPlotzoomer, scroll bars working perfectly fine.

Now I want to add QwtPlotMagnifier feature, so on wheel scroll event, scroll bars should works.

I have added QwtPlotMagnifier successfully, zooming also in effect but scroll bars are not updating, scroll bars still in the same position and only update on QwtPlotZoomer.

I'm trying to dig into the code but getting difficult, can you please help me in this regard ?

Thanks