[Octave-bug-tracker] [bug #60831] WindowButtonUpFcn is not always called

[Rik]

Update of bug #60831 (project octave):

                Category:                    None => Plotting with OpenGL   
              Item Group:                    None => Matlab Compatibility   
                  Status:                    None => Confirmed              
                 Release:                   6.1.0 => dev                    
        Operating System:       Microsoft Windows => Any                    

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Follow-up Comment #1:

Confirmed.  Changing the Operating System to Any since this occurred on a
Linux machine running KDE, as well as the Microsoft Windows that you report. 
I've also changed the Release to "dev" because it occurs on the development
branch and will need to be fixed there.

The problem seems to be specific to uicontrol objects.  I re-wrote the first
example to use a text object and it works correctly with left and right
clicks.  Code is attached as repeat3.m and shown below.


function repeat3 (in)
  persistent ht;
  if (~nargin)
    ht = text (0.5, 0.5, '0', 'backgroundcolor', 'm', ...
               'buttondownfcn','repeat3(1)');
  else
    setappdata(gcf,'bdown',1);
    set(gcf,'WindowButtonUpFcn','setappdata(gcf,''bdown'',0);');
    while getappdata(gcf,'bdown')                            % loop until user
lets go of mouse
       incr = 1 - 2*strcmp(get(gcf,'SelectionType'),'alt');  % left/right
button goes up/down
       set(ht,'string',num2str(str2num(get(ht,'string'))+incr));
       pause(.1);
    end
  end
end



(file #51613)
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Additional Item Attachment:

File name: repeat3.m                      Size:0 KB
    <https://file.savannah.gnu.org/file/repeat3.m?file_id=51613>



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