While trying to write a test application for the pixels= method I
found that when doing too much work in on_change_value the value stops
The update method is called from the on_change_value. When everything
in that method is commented out it is possible to change the scale
value but since the update method is where this value is used it makes
the application somewhat pointless.
Any ideas how to do a “preview” that updates along with the changing
value as the user drags the scale?