动态设置菜单的有效性。先在程序中把所有菜单设置为失效，然后通过调用该程序来动态的把菜单设置为有效，对菜单权限控制比较严格的可以参考一下。供大家研究。传入菜单位置按下面规则：第一个菜单A，第二个菜单为B，第一个菜单下第一个子菜单为AA，以此类推。-The effectiveness of dynamic settings menu. First in the proceedings all the menu is set to expire, and then by calling the program to dynamically set the menu for the effective permissions for the menu control can be more stringent reference. For the U.S. study. Afferent menu position by the following rules: the first menu A, the second menu for B, the first sub-menu under the first menu for the AA, and so on.