sort.column.id
. The sortable
will
resort itself to reflect this change, after emitting a
gtkTreeSortableSortColumnChanged
signal. sortable
may either be
a regular column id, or one of the following special values:
GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID
GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID
gtkTreeSortableSetSortColumnId(object, sort.column.id, order)
object
sort.column.id
order