Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!sdd.hp.com!decwrl!ucbvax!bloom-beacon!ATHENA.MIT.EDU!swick
From: swick@ATHENA.MIT.EDU (Ralph Swick)
Newsgroups: comp.windows.x
Subject: Re: are /usr/include/X11/*I.h files standard?
Message-ID: <9008161216.AA03737@lyre.MIT.EDU>
Date: 16 Aug 90 12:16:46 GMT
References: <352@shrike.AUSTIN.LOCKHEED.COM>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 8

In a word, no.  The *I.h files in the Xt source directory are
considered internal to the Xt implementation.  None of the MIT
releases have ever installed these files into /usr/include/X11.
None of the public, standard interfaces are described in {Xt}*I.h
files (modulo possible bugs of course :-).

Any application that is depending upon them may be using some
implementation-specific information.