此程序实现了个人通讯录管理系统的基本功能，包括添加、删除、查找等基本功能，同时也添加了一些有趣的小功能——支持背景图片的更换。在程序中完成了与数据库的通信，并同样可以对数据库进行添加、查找、删除等功能。-This program to achieve the basic functions of a personal address book management system, including add, delete, search and other basic functions, but also adds some interesting features- Support for the replacement of the background image. Complete communication with the database in the program, and can also be added to the database, search, delete, and other functions.