The window’s backing store type.
The possible values for this property are described in
NSBackingStoreType. You can set the property only to switch a buffered window to retained or vice versa; you can’t change the backing type to or from nonretained after initializing a
NSWindow object (an error is generated if you attempt to do so).
Accessing Window Information
The window number of the window’s window device.
A dictionary containing information about the window’s resolution, such as color, depth, and so on.
A Boolean value that indicates the level of access other processes have to the window’s content.
A Boolean value that indicates whether the window’s depth limit can change to match the depth of the screen it’s on.