[Pkg-octave-devel] Bug#675509: Bug#675509: Bug#675509: octave: fltk does not work (almost)

[Francesco Potortì]

>>>> Hm.  Apparently it does not work from inside the inferior Octave process
>>>> of Emacs.  If I run it from outside of Emacs I do not see problems.
>>>> Also, inside Emacs I only see problems when using inferior octave mode:
>>>> if I call Octave from inside a shell buffer I see no problems.
>>>
>>>This might be a synchronisation problem. Similar behaviour can be
>>>observed with fltk and QtOctave, I think. Can you test?
>>
>> Sorry, I am ignorant in both fltk and QtOctave.  What should I install?
>> What should I try?
>
>Install QtOctave from the repos (it's still there). Then inside it
>type "graphics_toolkit fltk" and attempt whatever plotting you were
>doing from Emacs.

Ok, did that.  Many strange things happen.

First time: I launch QtOctave, I type

graphics_toolkit fltk
plot(something)
close

and indeed the graphics window does not go away.  I type

plot(something)

and the plot is not updated, the window contents disappear, as it does
under Emacs.  Then I close qtoctave and the plot window finally closes.

From now on, when I launch qtoctave the interactive window gets killed
after a couple of seconds.  Removing the ~/.qtoctave directory solves
the problem.  Second test:

graphics_toolkit fltk
plot(something)

I press the G button on the plot window, nothing happens.  Then

plot(something else)

the plot is updated, with a grid on.  Then

close

nothing happens.  Even in this second test the behaviour is the same as
from the inferior octave Emacs buffer. 

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