Enabling space bar and arrows as hot keys

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Kyle Stanhouse
Kyle Stanhouse on 4 Oct 2013
Answered: Jan on 5 Oct 2013
Hello,
I'm trying to enable hot keys to execute functions in my Matlab script. In particular, I'd like to use the space bar and arrow keys. I've implemented the infrastructure to handle the event of a key press, and have successfully associated certain letters with functions, but i can't find any documentation that explains how i refer to the space bar and arrows. To be clear I just need to know the string Matlab uses to indicate the space bar and the arrow keys so that I can have them initiate functions the same way i've done with letter keys.
Thanks, Kyle

Accepted Answer

Image Analyst
Image Analyst on 4 Oct 2013
Just check out all keys for the value they return in the keypress callback function, and note what values the arrow and space bar return. I bet the space bar returns 32 but I don't know the arrow key values off the top of my head but you can easily find out.
  2 Comments
Image Analyst
Image Analyst on 4 Oct 2013
Kyle, you're looking at it as a character. What is it's ASCII value? Like a space = 32, '0' = 48, 'A' = 65, etc. What is the value of an arrow key?

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More Answers (1)

Jan
Jan on 5 Oct 2013
The 2nd input of the KeyPressFcn:
figure('keypressfcn', @(FigH, EventData) disp(EventData))
Now press on the desired keys and see the values of the EventData, e.g.
Character: ''
Modifier: {1x0 cell}
Key: 'rightarrow'

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