ADS (The AutoCAD Development System) and DCL (Dialog Control Language) are presented by designing interface of the gas spring CAD system, ad the design and implementation of interface dialog box are analyzed.

• 结合可控气弹簧CAD系统的界面设计介绍了AutoCAD二次开发语言ADS及DCL；重点分析了高级接口对话框的设计与实现.