catia 二次开发教程，CAA(Component Application Architecture)C++是CATIA的一整套C++函数库，该函数库在CATIA运行时加载。用户通过安装RADE(Rapid Application Development Environment)模块，用户可以在VC++编程环境下编制程序，与CATIA进行通信。(CATIA secondary development course)