使用.NET进行AutoCAD二次开发的一个chm文档，介绍了最新的ObjectARX托管类。-Use. NET for AutoCAD second development of a chm file, on the latest ObjectARX Managed Classes.

autocad二次开发技术文档，包括objectarx、activex、autocad.net等。(AutoCAD two development technical documents, including ObjectARX, ActiveX, autocad.net and so on.)