A Boolean value that indicates whether the window is the key window for the app.
Mac Catalyst 13.0+Beta
The value of this property is true when the window is the key window or false when it is not. The key window receives keyboard and other non-touch related events. Only one window at a time may be the key window.
Called automatically to inform the window that it is no longer the key window.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.