对TrackLookButton按钮的扩展，实现更漂亮的按钮-TrackLookButton button on the expansion button to achieve a more beautiful

VC6下开发的简单单据管理软件，使用ADO方式连接Access数据库，采用TrackLookButton和Gridctrl控件。-VC6 to develop a simple document management software that uses ADO to connect Access database using TrackLookButton and Gridctrl controls.