用MFC实现树的建立和显示，同时用前序中序后序遍历显示，同时实现动态显示-MFC achieved by the establishment of the tree and display the same time, in order to use pre-order traversal order after the show, while achieving dynamic display

人工智能的八数码问题，采用的A*启发式搜索，显示运行时间和每一步运行过程。基于MFC的-Eight puzzle problem in artificial intelligence, using the A* heuristic search, display the running time and every step of the operation process. MFC-based