How to exit a GUI program?

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QiQin Zhan
QiQin Zhan 2013-2-27
If I exit a GUI code when it is running,it will still be running in the background or maybe some errors will occur. I want to know whether there is a function that can completely exit the program and kill all errors.

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Shashank Prasanna
Shashank Prasanna 2013-2-27
>> close all force
Well depends on what you want exactly, but after exist if you feel there are some hidden figures or some reason to think there is something open, the above command forces them to close. Use it when the CloseRequestFcn has been modified for example.
http://www.mathworks.com/help/matlab/ref/close.html

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Sean de Wolski
Sean de Wolski 2013-2-27
Well to insure that there aren't errors, put in conditionals before doing something that would error.
For example: if you have a function that wants to set a textbox's string to 'Done' at the end:
h = handle to textbox
if ishandle(h) %Does thes the textbox still exist?
%Yup
set(h,'String','Done');
else
%Figure was closed!
return
end

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