void set_mibtree_style(int exp_style,int line_style);
GtkCTreeNode *locate_treenode_by_oid(oid poid[],size_t size);
void populate_mib_tree(struct tree *child,GtkCTreeNode *tree);
void on_tree_select(GtkCTree *item,GList *node, gint column, gpointer junk);
void create_mibtree_tab(void);
void retree(struct tree *mibtree);