MATLAB: Class object won’t delete if it has a timer property

classdeletehandleMATLABpropertytimer

Best Answer

timers are handle semantics, and so live on when any variable they are assigned to goes out of scope.

Perhaps onCleanup() would help for you ?

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You will have to write your own delete() method for the class. Then when you delete the object, this method is called and it stops/deletes the timer.

MATLAB: Deleting Timer Objects containing in Objects’ properties

See if my code to kill all timers works for you:

%--------------------------------------------------------------------------------------------------------------------------
function StopTimer(handles)
try
  fprintf('Entering StopTimer...\n');
  listOfTimers = timerfindall % List all timers, just for info.
  % Get handle to the one timer that we should have.
  if isempty(listOfTimers)
    % Exit if there is no timer to turn off.
    fprintf('There are no timers to turn off. Leaving StopTimer().\n');
    return;
  end
  handleToTimer = getappdata(handles.figMainWindow, 'timerObj');
  % Stop that timer.
  stop(handleToTimer);
  % Delete all timers from memory.
  listOfTimers = timerfindall
  if ~isempty(listOfTimers)
    delete(listOfTimers(:));
  end
  fprintf('Left StopTimer and turned off all timers.\n');
catch ME
  errorMessage = sprintf('Error in StopTimer().\nThe error reported by MATLAB is:\n\n%s', ME.message);
  fprintf('%s\n', errorMessage);
  uiwait(warndlg(errorMessage));
end
return; % from btnStopTimer_Callback

Best Answer

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MATLAB: Does Matlab support destructor function in class

MATLAB: Deleting Timer Objects containing in Objects’ properties

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