How to break out of a while loop inside a function block ?
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I'm trying to break out of a while loop when a key is pressed and I've achieved this through the following code snippet -
keep = 1;
h = figure('KeyPressFcn','keep=0');
while keep
pause(0.01)
end
close(h)
I need to incorporate this into a GUI. But when this exact same code snippet is inserted into a function block, I'm no longer able to break out of the loop. Here's a code for the same -
function calibrate()
keep = 1;
h = figure('KeyPressFcn','keep=0');
while keep
pause(0.01)
end
close(h)
How do I get this to work ?
Thanks !
1 个评论
Muthu Annamalai
2015-7-28
Please use {} Code editor feature to make your code more readable to others.
采纳的回答
The search function is your friend. See https://ch.mathworks.com/matlabcentral/newsreader/view_thread/315080 for someone with the same problem, and an explanation and solution.
2 个评论
Prashanth Krishnan
2015-7-28
Camile van der Heijden
2018-3-1
Unfortunately, the newsreader link Jon referred to is no longer available. I would love to know what it said though. Does it involve using flag variables?
更多回答（1 个）
Muthu Annamalai
2015-7-28
编辑：Muthu Annamalai
2015-7-28
Changing your code to,
keep = true;
h = figure('KeyPressFcn',@() keep= ~keep );
while keep
pause(0.01)
sprintf('keep = %d',keep);
end
close(h)
may work. If this doesn't work, make keep an instance of a handle class.
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