Eventfilter on axis scales

[Uffe N. <uf...@op...>]

I have subclassed QwtPlot (4.2.0rc1) and want to install an eventfilter to handle muse click and moves on the axis scales. My first hunch was to try

const QwtScale *pScale = axis(i);
if ( pScale )
    pScale->installEventFilter( this );

but then I dicovered that axis() retutns const QwtScale*. 

Another option might be to reimplement 
virtual bool event(QEvent *)
in myQwtPlot()
but I am not so sure it would be the best option. 

Any views on this matter? 
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