带左侧展开菜单的Delphi漂亮界面，很经典的左侧展开/收缩菜单，也就是树控菜单，这是一个通用型的Delphi信息管理系统窗体界面，依照客户管理系统的功能和需求而设计，因此用Delphi设计窗体界面的可下载源码做为参考。-Delphi with a beautiful interface to expand the menu on the left side, the left side is a classic expand/shrink the menu, which is the tree control menu, which is a general-purpose information management system Delphi form interface, in accordance with the functions and needs of the customer management system designed therefore form interface designed with Delphi source code can be downloaded as a reference.