Am 21.12.2017 um 06:47 schrieb Daniel J Sebald:
It appears that FLTK is the toolkit for which mouse rotation in the
legend causes a zoom/unzoom. I notice that one can mouse-click on the
legend and drag it around (a feature I'm sure many are happy with), but
that doesn't work for a garden-variety axes. So, is there something
extra in C++ programming for legend?
It was me who added the possibility to drag the legend to another position.
In __init_fltk__.cc around line 1683 you'll find the exception for legends.