选择CAD实体，将实体的点位信息输出到一个文本文件中。对于刚接触ObjectARX编程的童鞋还是很有用的，可以清楚的了解CAD中部分类型实体的数据结构。VS2005+ObjectARX2007，个人编写。-Select CAD entities and write entities pts to a text file.It is helpful for those learn ObjectARX and C++.You can learn something about ARX Entiti

用C++模拟实现CAD功能，在C++的MFC窗口上模拟CAD的功能画图-With C++ simulation of CAD functions, in the C++ MFC window on the function of drawing CAD

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)