14 Sep
2017
14 Sep
'17
6:30 p.m.
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
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