>
> Good luck with it. If you manage to either find one or manage to code
> one. Let us know. It would be useful.
>
> --


OK. I have played a little bit to see if this is doable and I have a working
"Zoom button". It is not as dynamic as I wanted :  it takes 2 seconds even with
medium quality to change the view.  But this is nevertheless faster than
changing the code, recompiling, redisplaying the image... If I am not
too lazy, I will go on and add a few  other buttons to play with the camera view
 ;-)

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