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Get NSScreen with keyboard focus on the sandbox

What I want to know is that NSScreen has keyboard focus.

First I added an observer for NSWorkspace.didActiveApplicationNotification and whenever the foo method is called, I need to determine which NSScreen has keyboard focus.

 NSWorkspace.shared.notificationCenter.addObserver(self, selector: #selector(foo), name: NSWorkspace.didActivateApplicationNotification, object: nil)

All I received from this notification is the NSRunningApplication object, but it does not tell me which screen is focused.

In the NSScreen Documentation, I found the main NSScreen property with a description

Returns a display object containing a window using the keyboard focus.

This is what I want, but it does not work as I thought. It returns the wrong screen. I found this information in the header file

// cached value, possibly outdated

I tried accessibility, everything was fine, but it does not work when Sandbox is turned on, so I can not use it.

Does anyone know how to get an NSScreen object with keyboard focus?

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accessibility cocoa swift macos appstore-sandbox
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