It's written by our beloved Matt Pietrek, published in MSJ March 1999.
h**p://w*w.microsoft.com/msj/0399/comtype/comtype.htm

This tool uses 2 COM interfaces named ITypeLib & ITypeInfo(detailed in MSDN now) to extract symbolic info from an In-Process COM Server and generates corresponding *.MAP/*.DBG file. This will be a great help when you try to crack OCXs.

I don't know whether IDA itself or its plug-ins can do this.

I have only worked on 2 ocxs.

I didn't found any difficultys with either.

Cept if you count finding a copy of delphi to test it with, and the buggy demo code supplied.

Kilby...

You can always try it on my ocx. I have been waiting for people to feedback to me but no one answered my call. My app is called RTSPS (forget about RT, SPS means software protection system)

http://rtsoft.cjb.net

Thanks!
Ryan
I need feedback.

Solomon, thank you for that link. Who would have thought that this information would come in handy in 2004?