Re: unable to set black text color for cdk

[Thomas Dickey]

On Mon, Mar 30, 2015 at 12:31:33PM +0200, daggs wrote:
> Greetings,
> 
> I'm trying to setup a text in black color and it ends up in gray, looping
> over the first 49 colors (with and without bold) didn't returned any label
> with black text color, is it possible that there is no black color text in
> cdk?

hmm - it's more complicated than that - partly Cdk and partly (n)curses.

The initCDKColor function is probably what you're looking at, since
it is the only place that calls init_pair().  It's a little odd (I think)
because it maps the colors 0-7 in this order:

      COLOR_WHITE, COLOR_RED, COLOR_GREEN,
      COLOR_YELLOW, COLOR_BLUE, COLOR_MAGENTA,
      COLOR_CYAN, COLOR_BLACK

If the terminal supports more than 8, cdk uses only 8.  You can always
override that by calling init_pair() in your application.

Normally in curses, black is zero.  That raises a point, i.e., that color
pair 0 is special in curses (no colors as such).  So cdk does not use that.

In any case, since black is last, you would see black text on pairs 57-64,
due to the way the loops are ordered.

-- 
Thomas E. Dickey <address@hidden>
http://invisible-island.net
ftp://invisible-island.net

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