bugGNU Octave - Bugs: bug #49397, Spacebar key is not recognize as...


bug #49397: Spacebar key is not recognize as "space"

Submitted by:  Avinoam Kalma <avinoam>
Submitted on:  Thu 20 Oct 2016 08:32:36 PM UTC  
Category:  Plotting with OpenGL Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  Fixed Assigned to:  None
Originator Name:  Avinoam Open/Closed:  Closed
Release:  dev Operating System:  Any

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Fri 21 Oct 2016 07:51:14 PM UTC, comment #4: 

Because although I think impact of the code change is small, I'm not 100% certain.  That would require more extensive testing which it can get over time on the development branch.  Also, the severity of the bug isn't large.

Rik <rik5>
Project Administrator
Fri 21 Oct 2016 07:46:36 PM UTC, comment #3: 

Thanks @Pantxo & @Rik.

@Rik: Why didn't you push it to the stable branch?

Avinoam Kalma <avinoam>
Project Member
Fri 21 Oct 2016 04:37:08 PM UTC, comment #2: 

Patch works fine.  I pushed it here http://hg.savannah.gnu.org/hgweb/octave/rev/65d84345abfc.  Fixed, closing report.

Rik <rik5>
Project Administrator
Thu 20 Oct 2016 10:06:57 PM UTC, comment #1: 

I can confirm this behavior with the "space" key. It looks like Qt::Key_Any has the same value as Qt::Key_Space hence the confusion in the key->string mapper. I attached a simple cset.

Here is also a simplified test script:

keypressfcn = @(h,e) disp (e.Key);
figure ("keypressfcn", keypressfcn);

I change the OS to "any" as it also happens on linux, and the category to "Plotting with OpenGL".

(file #38779)

Pantxo Diribarne <pantxo>
Project Member
Thu 20 Oct 2016 08:32:36 PM UTC, original submission:  

consider the following simple script:

function test_space()
global g;

app = init_app();
g = build_GUI(app);

set(g.fig, 'KeyPressFcn', @on_type);

function on_type(~,e)
global g;
disp (e.Key);

switch e.Key
    case {'escape'}

function app = init_app()
app = struct();
app.sz = [100 200];

function g = build_GUI(app)
sz = app.sz;
g = struct();
g.fig = figure('Name','test spacebar', ...
    'NumberTitle','off', 'Menubar','none', 'Resize','off', ...
    'Position',[200 200 sz(2)*2 sz(1)+40]);

If you press any key, Octave will print this key. If you press
escape, Octave will print "escape" and quit this script.

The problem: if you press the spacebar, Octave will print
"any" and not "space" as Matlab does.

Avinoam Kalma <avinoam>
Project Member


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #38779:  space.patch added by pantxo (983B - text/x-diff)
file #38778:  test_space.m added by avinoam (517B - application/octet-stream)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by rik5 (Posted a comment)
  • -email is unavailable- added by pantxo (Updated the item)
  • -email is unavailable- added by avinoam (Submitted the item)
  • -email is unavailable- added by avinoam

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    Follow 9 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-10-21 rik5 StatusPatch Submitted => Fixed
        Open/ClosedOpen => Closed
    2016-10-20 pantxo StatusConfirmed => Patch Submitted
    2016-10-20 pantxo Attached File- => Added space.patch, #38779
        CategoryOctave Function => Plotting with OpenGL
        StatusNone => Confirmed
        Operating SystemMicrosoft Windows => Any
    2016-10-20 avinoam Attached File- => Added test_space.m, #38778
        Carbon-Copy- => Added a.kalma@gmail.com

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