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.
Returns the window’s graphics state object.
Indicates whether the window has a depth limit that allows it to store color values.
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 device the window manages is freed when it’s removed from the screen list.
A Boolean value that indicates whether the window’s depth limit can change to match the depth of the screen it’s on.