how can we control push button in matlab gui by keyboard instead of mouse click?

how to use keypressFcn to assign the key for push button.?

[per isakson]

See GUI automation using a Robot at UndocumentedMatlab

[Stephen23]

@heisenberg: Please don't post duplicate questions:

http://www.mathworks.com/matlabcentral/answers/179706-how-can-i-focus-on-all-push-button-at-a-same-time

Answer 1

[Geoff Hayes]

heisenberg - if you are using GUIDE to create your GUI, then you could assign a WindowKeyPressFcn callback to your figure (GUI) and then, based on the key pressed while the figure has focus, you could call the appropriate button.

Suppose that your GUI/figure is named figure1 and you have one push button (named pushbutton1) that you wish to fire when you press the x key. Your callback to capture key presses could look something like

 function figure1_WindowKeyPressFcn(hObject, eventdata, handles)

 % determine the key that was pressed 
 keyPressed = eventdata.Key;

 if strcmpi(keyPressed,'x')
     % set focus to the button
     uicontrol(handles.pushbutton1);

     % call the callback
     pushbutton1_Callback(handles.pushbutton1,[],handles);
 end

In the above we check for when the x is pressed and then simulate the pressing of the button by calling the appropriate callback. You may not need to set focus to the button using uicontrol but I don't think that it hurts to do this as well.

[heisenberg]

thank you Geoff Hayes.It worked. how can I focus all push button at a same time?it works fine for 1 push button.but if i use another push button it doesn't switch the focus..

[Geoff Hayes]

I don't understand what you mean by how to "focus all push buttons at the same time". Do you want to associate different keys with different buttons? If so, then you can just do extend the above to handle multiple keys. i.e.

 if strcmpi(keyPressed,'x')
     % set focus to the button
     uicontrol(handles.pushbutton1);
     % call the callback
     pushbutton1_Callback(handles.pushbutton1,[],handles);

 elseif strcmpi(keyPressed,'y')
     % do something else

 elseif strcmpi(keyPressed,'v')
     % etc.
 end

[heisenberg]

i used two keypressfcn for 2 push buttons & assigne 2 keys.for 1st pushbutton your program works fine.but for second push button when i give second key input it does not recognize, but if i gave one input from mouse click to 2nd push button it got focused and once it get focused the related assign key starts to works. so i want to ask what should i do to avoid that mouse click to shift the focus.?

[heisenberg]

i used separate keypressfcn for 2 pushbuttons.

[Geoff Hayes]

Please post some of your code so that I can get an idea of what you have implemented.

Answer 2

[Wajih Khan]

when I press a key it just types in the command window and nothing else happens... help

[Geoff Hayes]

Wajih - please post this as a new question rather than as an answer. Include any relevant code.

Answer 3

[hari kantona]

anusefull jmbt