# HG changeset patch
# User Rik <rik@octave.org>
# Date 1712362692 25200
# Node ID fa8a486773fdd9e033eb872a2b8d1abef13f8647
# Parent  35ac89ffcf7c96cce872345bddb984368ee61658
legend.m: Fix error if root property "showhiddenhandles" is "on" (bug #65442)

* legend.m: At start of function, check root property "showhiddenhandles".  If
set to "on", then turn it "off".  Create an onCleanup action to restore the
setting at the end of the function.

diff -r 35ac89ffcf7c -r fa8a486773fd scripts/plot/appearance/legend.m
--- a/scripts/plot/appearance/legend.m	Fri Apr 05 19:56:56 2024 +0200
+++ b/scripts/plot/appearance/legend.m	Fri Apr 05 17:18:12 2024 -0700
@@ -207,6 +207,12 @@
   ##        lock once that bug is properly fixed.
   mlock ();
 
+  ## legend() requires root property to be invisible.
+  if (strcmp (get (groot, 'showhiddenhandles'), 'on'))
+    cleanup = onCleanup (@() set (groot, 'showhiddenhandles', 'on'));
+    set (groot, 'showhiddenhandles', 'off');
+  endif
+
   opts = parse_opts (varargin{:});
 
   hl = opts.legend_handle;