gdk-sharp 2.10.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Specifies the crossing mode for None. System.Enum GLib.GType(typeof(Gdk.CrossingModeGType)) Field Gdk.CrossingMode Crossing because of pointer motion. Field Gdk.CrossingMode Crossing because a grab is activated. Field Gdk.CrossingMode Crossing because a grab is deactivated.