Hi Bernhard,

re:
> As mentioned, the "Area/Zoom/Pan/Rotate/Reset" buttons always change focus
> as expected on any display. Would it be possible to use the same detection
> mechanism for the editing area?

Not exactly because you're doing a click for the Area/Zoom/Pan/Rotate/Reset, and no click for the mouse wheel zoom.

But I should be able to do some extra checking just for the case of running under Wine, to manually re-route a
mouse wheel event to the viewport that the mouse is over top of.

- Michael