Re: [gtk-list] Re: rubber banding lines - xorput?

[Paul Barton-Davis <pbd op net>]

>> Hi, John.  Perhaps you could use gdk_draw_line, with the GdkFunction set
>> to GDK_XOR in the GdkGC.  See: 
>> 
>
>Owen posted maybe a few months ago before explaining why this is often not
>the best approach, but I don't remember enough of what he said to
>paraphrase. Maybe someone can find it in the archives...

i'm making a guess that you might be thinking of owen's reply to one
of my many questions at that time regarding XOR. his main point was,
to paraphrase a recent reply of his: its a 1988 solution. Apparently,
the 1999/2000 solution is GnomeCanvas.

as i've said many times - i'd happily use the GnomeCanvas if it was
part of GTK+. in the meantime, if you really, really want do
rubber-banding, setting the GdkFunction to GDK_XOR works just great,
and is significantly faster than doing the same thing with the
Canvas. OTOH, "significantly faster" has to be measured on my system 
(PII-450/Matrox AGP/XFree86-3.3.2) because you almost can't see it :)

--p