how to find objects with handlevisibility off?

Here's a tricky question -

How do I find all the objects with HandleVisibility set to off?

get(get(gca,'xlabel'),'HandleVisibility')
ans =

off

but,

findobj(0,'HandleVisibility','off')

ans =

   Empty matrix: 0-by-1

It came up after trying to duplicate a figure (it doesn't work when playing with xlabel position, for example)

Any idea (for either one of the issues) will be blessed

Answer 1

[Sean de Wolski]

doc findall
doc allchild

[Noam Greenboim]

Thanks.

Another workaround I found was this:

set(0,'ShowHiddenHandles','on')

[Sean de Wolski]

This is generally overkill. Handles tend to be hidden for a reason.