🚀 go-pugleaf

In article <1992Apr8.113011.23572@descartes.waterloo.edu>, wjbaird@descartes.waterloo.edu (Warren Baird) writes:
#1)  The information that I've seen implies that DECWindows under VMS is
#an X11 varient, but I haven't been able to find the relationship
#between various versions of DECWindows and the releases of X11.  Is
#there an easy way to tell whether a version of DECWindows is X11R3 or
#X11R4?

The original DECwindows product that was supplied with VMS 5.1 through VMS 5.5
is X11R3 based.  Applications in this kit are based on the XUI toolkit which
DEC invented.  This product is being phased out.

The DECwindows Motif product is X11R4 based.  As I understand it, it is not
bundled with VMS...  it requires a separate install kit and license. 
Typically, there is not cost involved...  it's just a separate kit.

#2) Is VMS DECWindows a full X11 distribution?  Does it support all of
#the XLib toolkit?  Are there any other toolkits that are always
#included?

Xlib isn't (IMHO) a toolkit.  DECwindows has a Xlib interface that is pretty
good.

Original DECwindows includes the XUI toolkit.
DECwindows Motif includes XUI and Motif.

There are public-domain and commercial ports of other toolkits.

#3) Is there any easy way for X programs running under VMS (with the
#DECNet protocol, I suppose) to communicate with X servers running under
#Unix? (either Ultrix or otherwise)

Three ways come to mind:

1)  Install DECnet on the UNIX box (assuming it's available and works with X)
2)  Install TCP/IP on the VMS box (seems like all the IP for VMS vendors now
    support X windows)
3)  Use a gateway between the two protocols.  I believe there is one available
    under ULTRIX, TGV will be shipping one with MultiNet TCP/IP (for VMS)
    around the May timeframe.

#4) Are there any special issues that have to be addressed in porting an
#XLib-based program from Unix to VMS?

I'll let someone else tackle this one.  My own experiments find Xlib to be
pretty portable...  it's the toolkits and o/s call that haunt you.

--
John 'Fast-Eddie' McMahon    ()
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