Checks whether there is a gdk.Screen is associated with this widget. All toplevel widgets have an associated screen, and all widgets added into a hierarchy with a toplevel window at the top.
TRUE if there is a gdk.Screen associated with the widget.
2.2
Checks whether there is a gdk.Screen is associated with this widget. All toplevel widgets have an associated screen, and all widgets added into a hierarchy with a toplevel window at the top.