How to check TWO key pressed in Matlab?

Question

I have a Matlab GUI with many buttons. Now I want to set some shotcuts to the button. Actually I can check for one button and it works fine. My questin is how I can check if two buttons will be press?

Something like CTRL + KEY. It mustn´t the CTRL key =) It could be any key combination.

Thanks for help. Sorry for my english.

To check for one key I use this code:

key1 = get(gcf,'CurrentKey');

if(strcmp (key1 ,'k'))
%CODE HERE
end

I have try something like this (for the keys k and q):

key2 = get(gcf,'CurrentKey');

keystr = [key1 + key2];

if(strcmp(keystr, 'kq'))
%CODE HERE
end

The value of key1 change, if you press another button on the keyboard. So the && operator is never fullfilled.

What code do you use to check for one button pressed? I don't know much about this but wouldn't simply the && operator work here? — dreamer, Jul 30 '14 at 14:39

score 1 · Accepted Answer · edited May 23 '17 at 11:50

1

It is not fully generic, but I think this should do the trick:

First determine whether control is pressed as shown by @Pursuit (probably works for several keys)

modifiers = get(gcf,'currentModifier');        
ctrlIsPressed = ismember('control',modifiers);

Then just check the current key, as you already did and combine the result. In the end it could look something like this:

modifiers = get(gcf,'currentModifier');        
key1 = get(gcf,'CurrentKey');

if(strcmp (key1 ,'k')) && ismember('control',modifiers)
    %CODE HERE
end

edited May 23 '17 at 11:50

Community

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answered Jul 30 '14 at 15:30

Dennis Jaheruddin

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thats a nice solution. But on every try I get a 0 if I press the control key and if I press an other key. – user3510014 Jul 31 '14 at 08:36
@user3510014 Do you manage to get it working if you only press the control key? If not please check the linked question and see what you do differently. – Dennis Jaheruddin Jul 31 '14 at 08:42
I´ve did it only with the control key. What does mean the comment in the linked question (Use an actual figure number if known)? – user3510014 Jul 31 '14 at 08:52
If I check the value of modifiers it´s an empty cell array- – user3510014 Jul 31 '14 at 09:11

How to check TWO key pressed in Matlab?

1 Answers1