gtk-sharp 2.6.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Determine the direction that is affected by a . The mode of the determines the directions in which the affects the requested sizes of its component widgets. System.Enum GLib.GType(WrapperType=typeof(Gtk.SizeGroupModeGType)) Field Gtk.SizeGroupMode Has no effect on widget size requisitions. Field Gtk.SizeGroupMode Affects widget size requisitions horizontally. Field Gtk.SizeGroupMode Affects widget size requisitions vertically. Field Gtk.SizeGroupMode Affects widget size requisitions both horizontally and vertically.