gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), LST_DSPOPE_CATEGORY, list_txn_sort_iter_compare_func, GINT_TO_POINTER(LST_DSPOPE_CATEGORY), NULL);
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), LST_DSPOPE_TAGS , list_txn_sort_iter_compare_func, GINT_TO_POINTER(LST_DSPOPE_TAGS), NULL);
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), LST_DSPOPE_CLR , list_txn_sort_iter_compare_func, GINT_TO_POINTER(LST_DSPOPE_CLR), NULL);
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), LST_DSPOPE_CATEGORY, list_txn_sort_iter_compare_func, GINT_TO_POINTER(LST_DSPOPE_CATEGORY), NULL);
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), LST_DSPOPE_TAGS , list_txn_sort_iter_compare_func, GINT_TO_POINTER(LST_DSPOPE_TAGS), NULL);
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), LST_DSPOPE_CLR , list_txn_sort_iter_compare_func, GINT_TO_POINTER(LST_DSPOPE_CLR), NULL);
/* apply user preference for columns */
list_txn_set_columns(GTK_TREE_VIEW(treeview), pref_columns);
/* apply user preference for columns */
list_txn_set_columns(GTK_TREE_VIEW(treeview), pref_columns);