Stop a while loop using a GUI

Hey everyone,

I need to stop a while loop using a 'Stop' button in a GUI and i was wondering what are the best ways of doing that.

Answer 1

[Jan]

A short example:

h = uicontrol('Style', 'PuchButton', 'String', 'Stop', ...
              'Callback', 'delete(gcbo)');
while ishandle(h)
  disp(datestr(now, 0));
  pause(0.25);
end

Check out the famous 41 GUI example.

[Raldi]

Ill go with this answer as i already have created a pushbutton. Will there be a problem if the pushbutton is created in another function and i just use findobj or something similar?

[Jan]

On one hand: no, you can create the button anywhere and use any method to obtain the handle. On the other hand: simply try it - when you do not have problems, it works.

Answer 2

[Birkan GOCERLER]

Use toggle button http://blogs.mathworks.com/videos/2010/12/03/how-to-loop-until-a-button-is-pushed-in-matlab/

Answer 3

[Sean de Wolski]

Have the while-loop check if a togglebutton uicontrol has been pushed (i.e. what is it's value). If it has the loop will end

while(get(handles.togglebutton,'value')); %handles.togglebutton is handle to button
  do_stuff;
  drawnow; %force event queue update
end