[Octave-bug-tracker] [bug #55428] gcbf and HandleVisibility property

[Guillaume]

Follow-up Comment #6, bug #55428 (project octave):

If you put together "When the HandleVisibility property value is 'off',
objects do not appear in the root CallbackObject property" and "gcbo returns
the handle of the object whose callback is currently executing. This handle is
obtained from the root property 'CallbackObject'", then you would conclude
that an object with HandleVisibility set to 'off' would never be returned by
gcbo.

My understanding is that, to be of any use, gcbf and gcbo would always return
a non-empty object when called within a callback regardless of the
HandleVisibility property.

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