gint gtkut_ctree_get_nth_from_node (GtkCTree *ctree,
GtkCTreeNode *node);
GtkCTreeNode *gtkut_ctree_node_next (GtkCTree *ctree,
gint gtkut_ctree_get_nth_from_node (GtkCTree *ctree,
GtkCTreeNode *node);
GtkCTreeNode *gtkut_ctree_node_next (GtkCTree *ctree,