About callback function in GUI

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Yang 2012-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/32321-about-callback-function-in-gui

I have a GUI program. One button is to call a for loop which shows lots of image on the UI. And I want to have another button which can stop this loop. But I find that the callback function are separately. How can I write codes in the callback function of "stop" button to control the loop in another callback function?

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Answer 1

Jan 2012-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/32321-about-callback-function-in-gui#answer_40853

The "stop" button can set a value store in the figure, e.g. UserData or ApplicationData, see doc guidata.

Then the running callback can read this variable and stop on demand. Do not forget to insert a drawnow to allow the execution of the "stop"-buttons callback.