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−## Copyright (C) 2008-2012 Bill Denney
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−##
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−## This file is part of Octave.
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−##
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−## Octave is free software; you can redistribute it and/or modify it
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−## under the terms of the GNU General Public License as published by
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−## the Free Software Foundation; either version 3 of the License, or (at
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−## your option) any later version.
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−##
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−## Octave is distributed in the hope that it will be useful, but
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−## WITHOUT ANY WARRANTY; without even the implied warranty of
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−## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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−## General Public License for more details.
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−##
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−## You should have received a copy of the GNU General Public License
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−## along with Octave; see the file COPYING.  If not, see
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−## <http://www.gnu.org/licenses/>.
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−
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−## -*- texinfo -*-
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−## @deftypefn {Function File} {@var{h} =} allchild (@var{handles})
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−## Find all children, including hidden children, of a graphics object.
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−##
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−## This function is similar to @code{get (h, "children")}, but also
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−## returns hidden objects.  If @var{handles} is a scalar,
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−## @var{h} will be a vector.  Otherwise, @var{h} will be a cell matrix
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−## of the same size as @var{handles} and each cell will contain a
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−## vector of handles.
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−## @seealso{get, set, findall, findobj}
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−## @end deftypefn
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−
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−## Author: Bill Denney <bill@denney.ws>
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−
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−function h = allchild (handles)
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−
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−  shh = get (0, "showhiddenhandles");
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−  unwind_protect
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−    set (0, "showhiddenhandles", "on");
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−    h = get (handles, "children");
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−  unwind_protect_cleanup
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−    set (0, "showhiddenhandles", shh);
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−  end_unwind_protect
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−
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−endfunction
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−
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−
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−%!testif HAVE_FLTK
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−%! toolkit = graphics_toolkit ();
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−%! graphics_toolkit ("fltk");
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−%! hf = figure ("visible", "off");
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−%! unwind_protect
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−%!   l = line;
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−%!   assert (get (allchild (hf),"type"),{"axes"; "uimenu"; "uimenu"; "uimenu"});
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−%! unwind_protect_cleanup
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−%!   close (hf);
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−%!   graphics_toolkit (toolkit);
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−%! end_unwind_protect
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−