c_gtk_tree_sortable_get_sort_column_id

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
gboolean function(GtkTreeSortable* sortable, gint* sortColumnId, GtkSortType* order) c_gtk_tree_sortable_get_sort_column_id;

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