App Designer - confirm exit when application is closed from Windows bar

Hi guys,

I have a simple question regarding App Designer.

Sometimes I accidentally click the close button which exits the application (obviously). Is there a way to implement the confirmation dialog?

Answer 1

[Adam Danz]

Add a close request function to your app that requires confirmation.

1. From AppDesigner > Design View, right click the figure background, go down to "Callbacks", and select "Add CloseRequestFc function callback".

2. A UIFigureCloseRequest() function will be added in Code View. Add this to the function where app.UIFigure is the handle to your app figure.

YN = uiconfirm(app.UIFigure,'Do you want to close the app?', 'Close request');
if strcmpi(YN,'OK')
    delete(app)
end

[Mario Malic]

Works great, I have not seen this "almost hidden" menu before.

Thank you Adam!

[Adam Danz]

You can also access the figure's callback functions by clicking on the figure handle in the Component Browser and then click "callbacks" in the lower half of the panel on the right.

[Mario Malic]

I didn't use callbacks for the figure before,and I didn't even know that they exist. Thanks for the hint.

[Adam Danz]

Glad I could help!