How to enable mouse wheel using QwtPlotPanner?

[cesroc]

Hello,

I have an implementation for a scrolling area working fine, the problem is my implementation works when I press the left button or right button and drag the plotting area. I would like to enable my scroll using the mouse wheel. My implementation is:

plotScroll = new QwtPlotPanner( plot->canvas() );
plotScroll->setAxisEnabled(QwtPlot::yLeft,true);
plotScroll->setAxisEnabled(QwtPlot::xBottom,false);

plotScroll = new QwtPlotPanner( plot->canvas() );
plotScroll->setAxisEnabled(QwtPlot::yLeft,true);
plotScroll->setAxisEnabled(QwtPlot::xBottom,false);

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The implementation above work fine, but just using right or left button and it doesn't work for the wheel. Is it possible to enable wheel using QwtPlotPanner? How do I do that?
Thanks in advance
Best Regards