oaidl.h uses a symbol CURRENCY that is not defined anywhere in the Cygwin system headers. Also, it would need to include wtypes.h and unknwn.h in order to compile. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/