Multiple QwtPlots in one frame?

Hello,

I would like to visualize multiple plots within a frame. Currently, I have created several QwtPlots(which are pushed back into a QVector) and put them with layout into this frame. In each QwtPlot a curve will be ploted and then the user should be able to click those qwtPlots, which correspond to his wish (select them). By which means, could I detect the selected qwtPlot and also visualize, that such qwtplot was selected? If I should use QwtPlotPicker, then I will also have to fill a QVector with QwtPLotPickers, which belong to the corresponding QwtPlots and connect the signals of QwtPlotPicker to a function, which shall detect, which of qwtPlot was selected, but I think this kind of solution is too complex. Do you have more simple solution?

best regards,

Vitali