该测试工程功能强大，可以练习如何使用、操作单据控件、工具栏控件，以及单据服务. 需要安装上u811.0或以上版本 需要配置调试环境(The test project is powerful enough to practice how to use, operate, document controls, toolbar controls, and document services You need to install u811.0 or more You need to c