用VC开发的作图工具，支持器件库，支持动态特性设置。源码，可以进行二次开发。-development of the VC drawing tools, support for devices to support a dynamic feature set. Source code can be re-developed.

Autocad二次开发调试工具，可以查看CAD文件内部图元结构，对应Autocad2007版本!-Autocad secondary development and debugging tools, you can view CAD files primitive internal structure, corresponding Autocad2007 version!

UG二次开发实例；在NX8.0中的工具条，可以实现对零件密度、体积、质量的快速计算，方便模具设计的校验。-UG secondary development instance In NX8.0 toolbar, can be achieved on the quality of parts, volume density, fast calculation, convenient check mold design.