Immediatly break out from a loop upon callback

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Théo 2020-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/525990-immediatly-break-out-from-a-loop-upon-callback

评论： Théo 2020-5-18

Hello,

Is it possible to immediatly break out from a loop upon callback, meaning without waiting the loop to finish the commands its doing?

For example, I have a GUI with a button giving Button.Value=0 or 1 if pressed or not

My code is structured like this:

while someconditions
    %doAction1
    pause(60)
    %doAction2
    pause(60)
end

But if I do:

while someconditions && Button.Value==1
    %doAction1
    pause(60)
    %doAction2
    pause(60)
end

while someconditions && 
    if Button.Value==1
    %doAction1
    else
        break
    end
    
    pause(60)
    
    if Button.Value==1
    %doAction2
    else
        break
    end
    
    pause(60)
end

then pressing the Button will not immediatly stop the loop but rather finish all the commands, including long pauses. For example, if I press the button in the middle of a pause, then I will have to wait before the loop breaks.

Sorry to bother but I searched extensively and didnt really find something.

I'm using Matlab2019b with the AppDesigner.

Thanks !

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Rik 2020-5-16

This is fundamental to how Matlab works: even user interactions shouldn't break things. If you absolutely have to stop execution right now, you can always use ctrl+c.

Théo 2020-5-18