Delphi下开发进销存等系统的公共框架，自己开发成功的，拿过来可以直接用，稍微再改进一下更好。带数据库。供学习用。-Invoicing and other systems developed under Delphi' s common fr a mework, their successful development, and take over direct use, improve the look a little better again. With the database.