When I create a new QwtPlot the autoscale is on by default and it works just fine. But how does my program know the lower bound and upper bound of the axis (for some reason)? It can't read from the screen like me. I tried the QwtScaleDiv but no luck, it always returns 0 and 1000, which is the default value for manual scaling I guess. When I set the autoscale to false it returns those two values too.
Do I have to calculate the bounds myself anyway?