The set of app presentation options that are currently in effect for the system.
- macOS 10.6+
The presentation options. The constants are listed in
NSApplication and can combined using a C bitwise OR operator.
This property contains the presentation options that have been put into effect by the currently active app. You can use key-value observing on this property to receive notifications when:
The client is the active app and makes a change itself using either the
presentationproperty or the SetSystemUIMode(_:_:) function.
Another app is active and makes presentation changes of its own.
Another app becomes active and causes the active set of presentation options to change.
Key-value observing notifications aren’t sent when one of the above conditions occur, but has the same set of presentation options as the previously active app.