GUI Button with keyboard shortcut

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Jan
Jan on 20 Jul 2011
Hi,
I have a button in a GUI. The user may press it to execute the Callback. Alternatively, I would like the user to be able to press a shortcut key (for example, 'c') to press the button instead of clicking to execute the same callback.
Any ideas how to do this?

Accepted Answer

Jan
Jan on 27 Jul 2011
Thanks Walter. I basically went with your solution.
g = figure('KeyPressFcn', @keyPress)
MyButton = uicontrol('Style', 'pushbutton','Callback',@task);
function task(src, e)
disp('button press');
end
function keyPress(src, e)
switch e.Key
case 'c'
task(MyButton, []);
end
end

More Answers (2)

Walter Roberson
Walter Roberson on 20 Jul 2011
MyButton = uicontrol('Style','push','Callback',@whatever) set(gca, 'KeyPressFcn', @(src,event) CheckKeys(src,event,MyButton))
inside CheckKeys, if the data in the event structure shows you that the appropriate key has been pressed, then
cb = get(MyButton, 'CallBack');
cb{1}(src, [], cb{2:end})
The [] here is a fake event value, which is fine since Pushbuttons do not have a meaningful event value.
This setup presumes you used the function-handle form of setting the callback. If you used the string form of setting the callback... then Don't! that causes more trouble then it is worth.

Harry MacDowel
Harry MacDowel on 20 Jul 2011
Yes you can, Jan.
If you want to do that, you can define the KeyPressFcn by passing the input into a function you created yourself to do whatever you would like to.
I am lazy to post the whole procedure so I would give you the tutorial link on blinkdagger by Quan Quach here:-
Good luck!
  1 Comment
Jan
Jan on 20 Jul 2011
Unfortunately, the tutorial only goes over how to use the KeyPressFcn property to initiate a callback, but it doesn't go over how to link a pushbutton to a keyboard shortcut. I'm not quite sure if there's a simple way to do this..

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