[Octave-bug-tracker] [bug #51896] Qt toolkit: ginput doesn'work with zoom/pan buttons selected

[Philip Nienhuis]

URL:
  <http://savannah.gnu.org/bugs/?51896>

                 Summary: Qt toolkit: ginput doesn'work with zoom/pan buttons
selected
                 Project: GNU Octave
            Submitted by: philipnienhuis
            Submitted on: Wed 30 Aug 2017 05:06:19 PM CEST
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: philipnienhuis
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Microsoft Windows

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Details:

(At least seen on Windows; I can't check on Linux right now)

With the qt graphics tookit, when zoom or pan buttons are selected, ginput
doesn't return valid output. It just returns empty scalar values for requested
output.

With the fltk graphics toolkit this works fine AFAICS (at least the pan button
doesn't affect ginput(); fltk graphics windows have no zoom buttons).

In Matlab (r2017), the zoom & pan buttons (actually, all graphics window
buttons) are grayed out (made inactive) as soon as the ginput() command is
submitted.
IMO Octave should behave the same.

An Octave-4.0.3 release already shows this, so this is quite an old  issue.




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