[Octave-bug-tracker] [bug #44875] Error "base_graphics_object::get_properties: invalid graphics object"

[Guillaume]

URL:
  <http://savannah.gnu.org/bugs/?44875>

                 Summary: Error "base_graphics_object::get_properties: invalid
graphics object" 
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Sat 18 Apr 2015 09:15:42 PM GMT
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

I've been observing an error  "base_graphics_object::get_properties: invalid
graphics object" for a while in a large-ish GUI, when clearing a figure of all
its objects, and this with 100% reproducibility. I've tried to trim down a
workable example, see below, but sadly, now, the issue is harder to reproduce
and the error appears more randomly. Try to copy-paste the following at the
Octave prompt, including the carriage return for the last line.




F = figure('MenuBar','none');
uimenu(F,'Label','Menu');
uipanel('Parent',F,...
        'Position',[0.1 0.1 0.8 0.8],...
        'BackgroundColor',[0.5 0 0]);

H = findall(allchild(F),'flat');

delete(H);




You should see this from time to time:


>> error: base_graphics_object::get_properties: invalid graphics object





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