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From: swick@athena.mit.EDU (Ralph Swick)
Newsgroups: comp.windows.x
Subject: Re: What Version am I running?
Message-ID: <9102281627.AA17692@lyre.MIT.EDU>
Date: 28 Feb 91 16:27:50 GMT
References: <9102272229.AA01593@excalibur.lcs.mit.edu>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 13


    You can get the version from the server with the XVendorRelease
    function.  Of course, the interpretation of that number depends on the
    vendor, returned by XServerVendor.  xdpyinfo prints this information, too.

    Xt has a revision number defined in IntrinsicP.h.  Widgets can use the
    macro XtVersion to get the current revision.

The interpretation of the revision number in IntrinsicP.h is also
implementation-dependent.  Since R4, Xt has defined a symbol (macro),
XtSpecificationRelease, intended to hold the value of the corresponding
release number.  The R4 value was 4 (numeric).  The absence of this
#define indicates pre-R4.