iface->get_width = g_sheet_hetero_column_get_width ;
iface->set_width = hetero_column_set_width ;
iface->get_sensitivity = g_sheet_hetero_column_get_sensitivity ;
iface->get_width = g_sheet_hetero_column_get_width ;
iface->set_width = hetero_column_set_width ;
iface->get_sensitivity = g_sheet_hetero_column_get_sensitivity ;