How to add an App Delegate to a SwiftUI app

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Two flowers that represent SwiftUI and XCode side by side. Beneath them sits the text "SwiftUI AppDelegate".

Create an App Delegate class and add it to the app using @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate.

Below can be found sample code for a delegate that interrupts a MacOS app from quitting.

To learn how we implemented this, consult the tutorial below.

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