[Octave-bug-tracker] [bug #35393] Switching figure toolkit with graphics_toolkit() closes figure

[Rik]

URL:
  <http://savannah.gnu.org/bugs/?35393>

                 Summary: Switching figure toolkit with graphics_toolkit()
closes figure
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Sat 28 Jan 2012 01:27:37 PM PST
                Category: Plotting with gnuplot
                Severity: 2 - Minor
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.6.0
        Operating System: GNU/Linux

    _______________________________________________________

Details:

This is a small and odd bug.  If a graphics figure is created with the gnuplot
backend, but no plot is made, and then that figure is switched to the FLTK
backend then the figure is destroyed rather than converted.  The reverse,
starting with a blank FLTK figure and switching to gnuplot works.

The figure needs to be blank which suggests that the listener on
"__graphics_toolkit__" is using an overly simple test to determine whether a
figure exists.

Code to reproduce the problem:


close all
graphics_toolkit fltk;
h1 = figure;
graphics_toolkit (h1, "gnuplot");  # Figure disappears

BUT, this works
close all
graphics_toolkit gnuplot
h1 = figure;
graphics_toolkit (h1, "fltk");






    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?35393>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/