How to close a wiatbar when an error occurs before the delete command?

Question

Shravan Kumar 2017-4-14

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335341-how-to-close-a-wiatbar-when-an-error-occurs-before-the-delete-command

评论： Rik 2017-4-17

Hello All, In my script I have put a waitbar for intimating the user the current number of the calculation. The code goes like this:

pvh=waitbar(0,'calculating.....','name','LOSS ESTIMATION',...
    'createcancelbtn','setappdata(pvh,''cancel_callback'',1)');
setappdata(pvh,'cancel_callback',0);
for count_i1 = 1:lako_count
% If the calculation is cancelled exit the FOR loop.  
    if getappdata(pvh,'cancel_callback')
        errordlg('calculation Stopped by user');
    break;
    end
      waitbar(count_i1/ lako_count,pvh,sprintf('Calculating %d  %s %d',count_i1,'of', lako_count)); %progress bar for lako_count calculations

... so on the rest of the code goes and at the end I have delete (pvh); % To delete the waitbar fig at the end. This works fine. But one problem what I saw is, say for example if due to some error at other part of the code, the script stops before delete (pvh)and I will get the error but the waitbar doesnt close unless I enter delete() or close all force in the command window manually. Is there a method where when error occurs at any part of the code the waitbar also can be made to close automatically? I looked into try catch method but the problem I will not know what error occured/interrupted the program. I looked into oncleanup also but couldnt get much .

can someone please guide me on what can be done? thanks in advance

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Answer 1

Rik 2017-4-14

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335341-how-to-close-a-wiatbar-when-an-error-occurs-before-the-delete-command#answer_263017

在 MATLAB Online 中打开

You can use try and catch to catch any errors and close the waitbar.

try
    % all your code
catch ME
    delete(pvh);
    rethrow(ME) %re-issue the error
end

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Rik 2017-4-17

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