3890 cvInitTreeNodeIterator( CvTreeNodeIterator* treeIterator,  in cvInitTreeNodeIterator()  argument
3897     if( !treeIterator || !first )  in cvInitTreeNodeIterator()
3903     treeIterator->node = (void*)first;  in cvInitTreeNodeIterator()
3904     treeIterator->level = 0;  in cvInitTreeNodeIterator()
3905     treeIterator->max_level = max_level;  in cvInitTreeNodeIterator()
3912 cvNextTreeNode( CvTreeNodeIterator* treeIterator )  in cvNextTreeNode()  argument
3923     if( !treeIterator )  in cvNextTreeNode()
3926     prevNode = node = (CvTreeNode*)treeIterator->node;  in cvNextTreeNode()
3927     level = treeIterator->level;  in cvNextTreeNode()
3931         if( node->v_next && level+1 < treeIterator->max_level )  in cvNextTreeNode()
3947             node = node && treeIterator->max_level != 0 ? node->h_next : 0;  in cvNextTreeNode()
3951     treeIterator->node = node;  in cvNextTreeNode()
3952     treeIterator->level = level;  in cvNextTreeNode()
3961 cvPrevTreeNode( CvTreeNodeIterator* treeIterator )  in cvPrevTreeNode()  argument
3972     if( !treeIterator )  in cvPrevTreeNode()
3975     prevNode = node = (CvTreeNode*)treeIterator->node;  in cvPrevTreeNode()
3976     level = treeIterator->level;  in cvPrevTreeNode()
3990             while( node->v_next && level < treeIterator->max_level )  in cvPrevTreeNode()
4001     treeIterator->node = node;  in cvPrevTreeNode()
4002     treeIterator->level = level;  in cvPrevTreeNode()