GUI Button with keyboard shortcut

Question

Jan 2011-7-20

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https://ww2.mathworks.cn/matlabcentral/answers/12034-gui-button-with-keyboard-shortcut

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?

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Answer 1

Jan 2011-7-27

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https://ww2.mathworks.cn/matlabcentral/answers/12034-gui-button-with-keyboard-shortcut#answer_17119

在 MATLAB Online 中打开

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

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Answer 2

Walter Roberson 2011-7-20

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https://ww2.mathworks.cn/matlabcentral/answers/12034-gui-button-with-keyboard-shortcut#answer_16508

在 MATLAB Online 中打开

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.

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Answer 3

Harry MacDowel 2011-7-20

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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:-

http://blinkdagger.com/matlab/matlab-gui-tutorial-adding-keyboard-shortcuts-hotkeys-to-a-gui/2/

Good luck!

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Jan 2011-7-20

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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