How use a check box in a GUI

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Amanda
Amanda 2022-12-2
编辑： Eric Delgado 2022-12-3
I have created a Gui for a robot maze. I have a check box that shows the togglehistory its checked and doesnt show it when its unchecked. I have wrote a function for this but it does do anything when I click the but other than displaying show history or hide history. I'm not sure how to make the check box enable and disable the toggle history.
createRandomMaze
figure;
first_button = uicontrol('style', 'pushbutton');
set(first_button, 'units', 'normalized', 'position', [0.2,0.7, 0.2, 0.2])
set(first_button, 'string', 'turn left')
set(first_button, 'callback', @turnLeft)
second_button = uicontrol('style', 'pushbutton');
set(second_button, 'units', 'normalized', 'position', [0.4, 0.7, 0.2, 0.2])
set(second_button, 'string', 'step')
set(second_button, 'callback', @step)
third_button = uicontrol('style', 'pushbutton');
set(third_button, 'units', 'normalized', 'position', [0.6, 0.7, 0.2, 0.2])
set(third_button, 'string', 'turn right')
set(third_button, 'callback', @turnRight)
fourth_button = uicontrol('style', 'pushbutton');
set(fourth_button, 'units', 'normalized', 'position', [0.2, 0.5, 0.2, 0.2])
set(fourth_button, 'string', 'left')
set(fourth_button, 'callback', @stepLeft)
fifth_button = uicontrol('style', 'pushbutton');
set(fifth_button, 'units', 'normalized', 'position', [0.4, 0.5, 0.2, 0.2])
set(fifth_button, 'string', 'back')
set(fifth_button, 'callback', @stepBack)
sixth_button = uicontrol('style', 'pushbutton');
set(sixth_button, 'units', 'normalized', 'position', [0.6, 0.5, 0.2, 0.2])
set(sixth_button, 'string', 'right')
set(sixth_button, 'callback',@stepRight)
seventh_button = uicontrol ('style','checkbox');
set(seventh_button, 'units', 'normalized', 'position', [0.2, 0.3, 0.2, 0.2])
set(seventh_button, 'string', 'History')
set(seventh_button, 'callback', @toggleHistory)
eighth_button = uicontrol ('style', 'edit');
set(eighth_button, 'units', 'normalized', 'position', [0.4, 0.37, 0.2, 0.05])
set(eighth_button, 'string', '2')
ninth_button = uicontrol('style','pushbutton');
set(ninth_button, 'units', 'normalized', 'position', [0.6, 0.3, 0.2, 0.2])
set(ninth_button, 'string', 'Run!')
set(ninth_button, 'callback', @Run)
ninth_button.Callback = 'number_of_steps = str2num(eighth_button.String); walk(number_of_steps)';
function toggleHistory(sender, eventdata)
if history.Value == 1
disp showHistory
else
disp hideHistory
end
end
function Run(sender, eventdata)
step_input = (['eighth_button', 'string']);
if ~strcmp(step_input, ' ');
number_of_steps = str2num(step_input);
walk(number_of_steps);
end
end

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回答（1 个）

Eric Delgado
Eric Delgado 2022-12-3
编辑：Eric Delgado 2022-12-3
First of all, you have to save your "toggleHistory" function in a file "toggleHistory.m". And then you have to replace "history.Value" for "sender.Value" (because your function doesn't know who is "history"). Hope it helps! :)
Hummmm... final tip. Go to App Designer enviroment.
% File "toggleHistory.m"
function toggleHistory(sender, eventdata)
if sender.Value == 1
disp("showHistory")
else
disp("hideHistory")
end
end

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