From ripley@stats.ox.ac.uk  Wed Oct  4 08:37:02 2000
From: ripley@stats.ox.ac.uk (Prof Brian Ripley)
Date: Wed, 4 Oct 2000 08:37:02 +0100 (BST)
Subject: [Rd] R_ColorTable
In-Reply-To: <Pine.GSO.4.05.10010040729080.16973-100000@auk.stats>
Message-ID: <Pine.GSO.4.05.10010040828090.1246-100000@toucan.stats>

On Wed, 4 Oct 2000, Prof Brian D Ripley wrote:

> I should point out that Graphics.h (it is capitalized) is not a distributed
> header and not supported for use in addons.  We've had discussions about
> changing some of that.

Sorry, I garbled that.  What I meant to say is that Graphics.h is not in
R_ext and does not start with `R', only such headers are exported.

We have talked about exporting some of the graphics functions.  The
problem is the device driver defns, which I at least do not think are
stable enough to export. So the idea that we were exploring was to 
have *DevDesc as an opaque type in the exported header, and only allow
internal code access to its internals.  (If functions using *GPar 
need to be exported, then that would need to be made opaque too.)

Separately, Duncan TL was interested in accessing the driver part for an
addon driver, and I don't think we got too far in resolving that.

-- 
Brian D. Ripley,                  ripley@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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[Rd] R_ColorTable
Prof Brian Ripley