1## Copyright (C) 2008, 2009 Michael Goffioul
3## This file is part of Octave.
5## Octave is free software; you can redistribute it and/or modify it
6## under the terms of the GNU General Public License as published by
7## the Free Software Foundation; either version 3 of the License, or (at
8## your option) any later version.
10## Octave is distributed in the hope that it will be useful, but
11## WITHOUT ANY WARRANTY; without even the implied warranty of
12## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13## General Public License for more details.
15## You should have received a copy of the GNU General Public License
16## along with Octave; see the file COPYING. If not, see
17## <http://www.gnu.org/licenses/>.
20## @deftypefn {Function File} {@var{h} =} gcbo ()
21## @deftypefnx {Function File} {[@var{h}, @var{fig}] =} gcbo ()
22## Return a handle to the object whose callback is currently
23## executing. If no callback is executing, this function returns the
24## empty matrix. This handle is obtained from the root object property
27## Additionally return the handle of the figure containing the
28## object whose callback is currently executing. If no callback is
29## executing, the second output is also set to the empty matrix.
31##@seealso{gcf, gca, gcbf}
34function [h, fig] = gcbo ()
36 h = get (0, "callbackobject");
39 if (! isempty (h) && nargout > 1)
40 fig = ancestor (h, "figure");
