GUIDE: Calling button press on key press
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Does anyone know of a way to enable the callback for a button press (as if it were clicked) when a user presses a specified key on the keyboard?
For example, if the user presses the left cursor, it will enable button A, but if they press the right cursor, it will enable button B?
Thanks!
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Oleg Komarov
el 1 de Mzo. de 2011
An example with WindowKeyPressFcn set at the figure level. Whenever you push 'p' te action is the same pushing the button:
EDIT (Per Jiro's suggestion in the comments)
function [] = gui()
S.fh = figure('units','pixels',...
'position',[500 200 200 100],...
'menubar','none',...
'name','gui',...
'numbertitle','off',...
'resize','off',...
'WindowKeyPressFcn',@pb_kpf);
S.pb = uicontrol('style','push',...
'units','pix',...
'position',[10 10 180 40],...
'fontsize',14,...
'string','Hi!',...
'call',@pb_call);
S.tx = uicontrol('style','text',...
'units','pix',...
'position',[10 55 180 40],...
'string','goodbye',...
'fontsize',23);
% Callback for pushbutton, prints Hi! in cmd window
function pb_call(varargin)
set(S.tx,'String', get(S.pb,'String'))
end
% Do same action as button when pressed leftarrow
function pb_kpf(varargin)
if if strcmp(varargin{1,2}.Key, 'leftarrow')
pb_call(varargin{:})
end
end
end
You may also want to give a look at a very similar question: gui for keyboard pressed representing the push button
Oleg
2 comentarios
Jiro Doke
el 1 de Mzo. de 2011
In the last function "pb_kpf", if you examine varargin{1,2}.Key instead of varargin{1,2}.Character, you'll be able to capture "rightarrow" and "leftarrow".
In that case, be sure to use "strcmp" for the comparison:
if strcmp(varargin{1,2}.Key, 'leftarrow')
...
end
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