UG的二次开发一些例子，他可以帮助初学者快速入门-Some examples of the secondary development of UG, he can help the beginner quick start

几何造型库OpenCASCADE自带的例子,可以导入导出IGES/STEP格式的CAD文件,增加了用qtcreator打开工程文件的脚本文件-Geometric modeling library OpenCASCADE own example, you can import and export IGES/STEP format CAD files, increasing the use qtcreator scr ipt file to open the project file