专门用来操作Treeview和数据库，通过数据库中的数据自动添加到Treeview控件中，不过数据控件用的是ADO组件，另外数据库中存放Treeview节点数据表的结构位：ID:integer PID:Integer Caption:string 字段名成可以不同，但是类型必须相同！

公用单元：TreeFillThrd.pas TreeUtils.pas-Treeview and database designed to operate through the data in a database is automatically added to the Treeview control, but using a ADO data control component, another Treeview nodes in the data stored in the database table structure, position: ID: integer　PID: Integer　Caption: string　field name as may be different, but the type must be the same! Common unit: TreeFillThrd.pas　TreeUtils.pas