How could I code that if the user pushes “Q” then an X will be displayed the the coordinates (1,3)?

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Eryn Jaramillo
Eryn Jaramillo 2021년 3월 14일
답변: Geoff Hayes 2021년 3월 14일
I am creating a game of Tic Tac Toe and after someone suggested I use the ginput function, I found [x,y,button]=ginput(n). How could I tell Matlab that if a user pressed the “Q” button of the keyboard a text “X” or “O” would appear at a specific (x,y) coordinate?

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Geoff Hayes
Geoff Hayes 2021년 3월 14일
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.

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