Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!think!husc6!spdcc!bloom-beacon!inesc.UUCP!xsmd
From: xsmd@inesc.UUCP (Manuel Sequeira ; MDS)
Newsgroups: comp.windows.x
Subject: Re: C++ and X11
Message-ID: <8811021007.AA19158@mcvax.cwi.nl>
Date: 1 Nov 88 19:07:44 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 35


    Date: 31 Oct 88 22:01:21 GMT
    From: mcvax!june.cs.washington.edu!whaley  (Ken Whaley)

    Has anybody out there written a C++ interface to X11?  I.e., doctored up the
    ".h" files so that CC likes them?   

Yes we've done that.
There were two problems to solve:
1. Struct component names: new, delete, class.
    we solved that by including two files in every ".h" X file 
    which used such fields.
    - one at the beginning defining new, delete, and class as 
    Xnew, Xdelete, and Xclass.
    - another at the end undefining the previous definitions.

   Ramifications: if it is necessary to reference such fields in our code
		  we use Xnew etc. instead.

2. Functions Specification.
    As c++ was annoyed by the the C declarations in the ".h" X we deleted
    them. To avoid errors and warnings generated by the compiler, we
    specified the functions in others ".h" files (hidden to the user) and
    included by the usual ".h" X files.
    Since this specification task was not a very gratifing job to accomplish
    by hand, a mechanism was developed that using emacs macros, shell
    scripts and ".f" files (used to build the manual), somewhat automatized the
    process. 

  Ramifications: None whatsoever. 

We have been using this since X11R1, and the approach used facilitated the
upgrade to X11R2.

 -manel
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