PlotWin with scroll on real time

[looki]

Hi,
I need help to construct a window like the attached one.
There should be a realtime plot with scroll view per default. I will scroll at the hole plotted curve all the time.
I read/tried all the qwt examples and did the first steps, but the scroll behaviour makes me crazy.
I implement a plot with curveplot and x-axis as
setAxisScaleDraw(QwtPlot::xBottom,xScaleDraw);
the real time plot works, I give the x and y values.
If I try :
setAxisScale(QwtPlot::xBottom, 0, 10, 5);
the start of x axis is ever 0, This i understand.
Have I ever do replot the axis if the curve is outside the canvas?
I thought QWT has implement such behaviour. This should be a normal bahaviour in my eyes.
Or did I not found this.

thanks a lot for help

looki