gtk-sharp0.0.0.0neutralGtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.The style of spaces in a .System.EnumSystem.IComparableSystem.IConvertibleSystem.IFormattableFieldGtk.ToolbarSpaceStyleSeperate items normally (no line).FieldGtk.ToolbarSpaceStyleSeperate items with a line.