Gtk.TreeSortable::set_sort_func

function vfunc_set_sort_func(sort_column_id:Number, sort_func:Gtk.TreeIterCompareFunc):void {
}

Sets the comparison function used when sorting to be sort_func. If the current sort column id of sortable is the same as sort_column_id, then the model will sort using this function.

sort_column_id: the sort column id to set the function for
sort_func: The comparison function