How to find checkboxes in panel component in MATLAB app designer?

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Kevin Gjoni
Kevin Gjoni 2023-1-27
评论： Cris LaPierre 2023-1-28
% Find all the checkbox objects belonging to features
checkboxes = findobj(app.features, 'Style', 'checkbox');
In this code I'm trying to find all checkboxes that are in the panel "app.features". I don't get an error message, but I can't find any objects either. I get an 0x0 GraphicsPlaceholder. I only want to find the checkboxes that are in this panel, not in the whole app. How do I do this?
I attached the app, the section I'm talking about is in callbackfunction btnDrawButtonPushed(app, event).

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Cris LaPierre
Cris LaPierre 2023-1-28
Try this instead
checkboxes = findall(app.features,'type','uicheckbox');
  2 个评论
Kevin Gjoni
Kevin Gjoni 2023-1-28
Now i get an error further down in my code:
% Initialize an empty cell array to store the names of the selected checkboxes
selected_names = {};
% Loop through the checkboxes and check which ones are selected
for i=1:numel(checkboxes)
if get(checkboxes(i), 'Value') == 1
% If the checkbox is selected, add its name to the cell array
selected_names{end+1} = get(checkboxes(i), 'String');
end
end
it says
Unrecognized property String for class CheckBox.
I want to store the names of only the selected checkboxes as I need them for something else in my code.
Cris LaPierre
Cris LaPierre 2023-1-28
As the message states, there is no String property for checkboxes. The checkbox properties documentation page contains a list of all the properties of a checkbox. There, you will see the property name is 'Text' instead of 'String'.
Try this instead.
selected_names{end+1} = checkboxes(i).Text;

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