D7下的CAD 2004的二次开发,网上有很多VB的代码和教程唯独没有delphi 个人用业余时间写了一套,虽然环境有点老,但是还是可以借鉴的.希望对大家有所帮助.-D7 under 2004 secondary development of CAD, there are many online VB code and tutorials except Delphi individuals with a set of writing in my spare time, although the environment is a bit old, but still can draw lessons from. Hope to be of help.