getting attached curve to a plot

[corrado1972]

Seems a trivial question.. but I didn't find any method of QwtPlot to get a list of all curve (or better, all qwtplotitems) attached to itself.

Right now I'm using internal list of curves, but i wonder: is it due by the architectural design ?
More generically, the topic should be: how to traverse all items attached to a plot?.

cheers


(I'm using QWT 6.0.0 RC5)