From: richard@inf.ed.ac.uk (Richard Tobin)
Subject: [TUHS] X and NeWS history (long)
Date: Thu, 14 Sep 2017 13:30:41 +0100 (BST) [thread overview]
Message-ID: <20170914123041.B4F851525F0F@macaroni.inf.ed.ac.uk> (raw)
In-Reply-To: Larry McVoy's message of Wed, 13 Sep 2017 20:14:41 -0700
> I really kind of liked that toolkit, it was all key/value like so:
>
> panel = xv_create(
> frame, PANEL,
> XV_WIDTH, WIDTH,
> XV_HEIGHT, 30,
> PANEL_LAYOUT, PANEL_HORIZONTAL,
> XV_SHOW, FALSE,
> NULL);
>
> So the order of the args didn't really matter, I think the first one
> maybe did because that was the parent but not sure, the rest could
> be any order you wanted. Pretty simple.
The first two were fixed; the prototype was
Xv_object xv_create (Xv_opaque owner, Xv_pkg *pkg, ...);
The keywords (XV_WIDTH etc) contained a bitfield encoding the type and
cardinality of the value argument(s) so that the argument list could
be traversed without knowing every package's keywords.
Using NULL as the terminating argument looks unportable.
-- Richard
--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
next reply other threads:[~2017-09-14 12:30 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-14 12:30 Richard Tobin [this message]
2017-09-14 15:12 ` Warner Losh
-- strict thread matches above, loose matches on Subject: below --
2017-09-13 18:54 Nelson H. F. Beebe
2017-09-13 21:27 ` ron minnich
2017-09-13 15:17 Richard Tobin
2017-09-13 16:01 ` Jon Steinhart
2017-09-14 1:08 ` Nemo
2017-09-14 3:14 ` Larry McVoy
2017-09-08 20:54 [TUHS] Happy birthday, Dennis Ritchie! Dave Horsfall
2017-09-08 21:14 ` William Pechter
2017-09-11 16:30 ` Paul Winalski
2017-09-11 16:49 ` [TUHS] Happy birthday, Dennis Ritchie! [ really sun vs dec/apollo ] Jon Steinhart
2017-09-11 23:09 ` Larry McVoy
2017-09-12 7:38 ` arnold
2017-09-12 15:35 ` [TUHS] Happy birthday, Dennis Ritchie! [ really sun vs dec/apollo --> X and NeWS ] Jon Steinhart
2017-09-12 17:04 ` Arthur Krewat
2017-09-12 22:11 ` [TUHS] X and NeWS history (long) Jon Steinhart
2017-09-12 22:58 ` Larry McVoy
2017-09-12 23:22 ` Jon Steinhart
2017-09-12 23:44 ` Chris Torek
2017-09-12 23:41 ` Adam Sampson
2017-09-13 0:14 ` Jon Steinhart
2017-09-13 0:29 ` Bakul Shah
2017-09-13 0:52 ` ron minnich
2017-09-13 0:54 ` Warner Losh
2017-09-13 0:56 ` ron minnich
2017-09-13 0:57 ` Warner Losh
2017-09-13 2:06 ` Kurt H Maier
2017-09-13 3:34 ` ron minnich
2017-09-13 3:55 ` Jon Steinhart
2017-09-13 15:16 ` Arthur Krewat
2017-09-13 1:42 ` Arthur Krewat
2017-09-13 2:27 ` Grant Taylor
2017-09-13 16:14 ` Lawrence Stewart
2017-09-13 0:56 ` Jon Steinhart
2017-09-13 1:34 ` Bakul Shah
2017-09-13 2:43 ` Grant Taylor
2017-09-13 3:01 ` Jon Steinhart
2017-09-13 3:25 ` Grant Taylor
2017-09-13 3:27 ` Jon Steinhart
2017-09-13 15:09 ` Tony Finch
2017-09-13 15:19 ` Jon Steinhart
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