the crossing mode (gdk.types.CrossingMode.Normal, gdk.types.CrossingMode.Grab, gdk.types.CrossingMode.Ungrab, gdk.types.CrossingMode.GtkGrab, gdk.types.CrossingMode.GtkUngrab or gdk.types.CrossingMode.StateChanged). gdk.types.CrossingMode.GtkGrab, gdk.types.CrossingMode.GtkUngrab, and gdk.types.CrossingMode.StateChanged were added in 2.14 and are always synthesized, never native.
Get mode field.