[R] printing from windows() device when running R under ESS

[ripley at stats.ox.ac.uk]

On Fri, 6 Sep 2002, Liaw, Andy wrote:

> Sorry for the cross-post: not sure whether it's Rterm or ESS (or something
> else?)...
>
> I'm running R (1.5.0 patched 2002-05-09, compiled from source on WinNT4)
> under ESS 5.1.21 with XEmacs 21.4.6.  When I plotted a graph on the
> windows() device, and then use the menu in the R graphics window to print
> the graph, the printer selection dialog box does not show up until I go to
> the *R* buffer and hit return there.  Anyone have any ideas?

Yes.  ESS runs Rterm at the end of a pipe, and that starves the main loop
(whereas interactive Rterm uses a separate thread that trickles the main
loop).

NTemacs (and I presume XEmacs) fudges the absence of pty's on Windows.
It's a wonder it works at all.  This could be solved if someone wants to
rewrite Rterm -ess to use a separate thread, but that's down to the
small community of emacs/ess/Windows/inferior-R-mode users to find a
volunteer.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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