isReleasedWhenClosed
A Boolean value that indicates whether the window is released when it receives the close message.
Declaration
var isReleasedWhenClosed: Bool { get set }Discussion
The value of this property is true if the window is automatically released after being closed; false if it’s simply removed from the screen.
The default for NSWindow is true; the default for NSPanel is false. Release when closed, however, is ignored for windows owned by window controllers.