I see Qwt comes with examples on QwtDial and QwtDialNeedle.
I wonder if it's possible to use a custom image as QwtDialNeedle.
I think it should be necessary to re-implement the virtual functions of QwtDialNeedle (draw, setPalette, drawNeedle, ...) and then it should work.

Can someone confirm this, please?
Is there a working example somewhere?