Eryn - you can use the following code to detect whether the Q (or q) button of the keyboard has been pressed
function KeyboardListenerExample
hFig = figure;
set(hFig,'KeyPressFcn',@OnKeyPressFcn);
function OnKeyPressFcn(hObject, eventdata)
if lower(eventdata.Character) == 'q'
fprintf('The q character has been pressed!\n');
end
end
end
but is that really what you want to do? Are you drawing an X or an O within the bounds of a square (one of the nine squares of the tic-tac-toe board), or just using a text object to write the X or O? You may want to detect, using the ButtonDownFcn where the user has pressed within your axes and then decide what to draw.
