Re: Obtaining and setting RGB values

[Markus Mottl]

On Thu, 29 Oct 2009, Thomas Dickey wrote:
> It's generally impossible to query terminals for these values.
> ncurses initializes its notion of the values without asking.
> 
> It's possible to ask xterm, but iirc none of the other terminal programs that
> claim to "emulate" xterm provide this feature.
> Even as an experimental feature, that's likely to be slow,
> but for the sake of discussion, a demonstration could be constructed.
> 
> Also, _setting_ the palette is generally unimplemented
> (rxvt is an exception).
[snip]
> When I test that (ncurses with 256 colors), I use one of the palette
> files such as xterm-88color.dat to initialize it, e.g., (using TERM
> set to xterm-88color):
> 
>       ncurses -p xterm-88color.dat
> 
> I could add a xterm-256color.dat file, but don't believe it would malfunction
> if xterm-88color.dat is working, and other than that the test screen would
> be much longer, probably wouldn't see any difference.

Thanks for the information, I think that answers our questions.

> In INSTALL, I documented the configure option to support extended colors:
[snip]
> That works for 32767 pairs (which is limited by the use of signed-short for
> numbers in terminfo data).  65536 would be best, 65535 might be doable
> but would require some juggling (so far, not an issue).

Ah, I see.  I may have run into this particular issue when testing
the standard installation of ncurses.  This would explain the lack of
color pairs.

Best regards,
Markus

-- 
Markus Mottl     Jane St. Capital, LLC     address@hidden

pgpmSou0CNNdT.pgp
Description: PGP signature