-.\" $Id: curs_color.3x,v 1.8 1997/01/19 02:50:30 tom Exp $
+.\"***************************************************************************
+.\" Copyright (c) 1998,2000 Free Software Foundation, Inc. *
+.\" *
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+.\" copies of the Software, and to permit persons to whom the Software is *
+.\" furnished to do so, subject to the following conditions: *
+.\" *
+.\" The above copyright notice and this permission notice shall be included *
+.\" in all copies or substantial portions of the Software. *
+.\" *
+.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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+.\"***************************************************************************
+.\"
+.\" $Id: curs_color.3x,v 1.16 2000/07/15 22:57:03 tom Exp $
.TH curs_color 3X ""
.SH NAME
-\fBstart_color\fR, \fBinit_pair\fR,
-\fBinit_color\fR, \fBhas_colors\fR, \fBcan_change_color\fR,
-\fBcolor_content\fR, \fBpair_content\fR - \fBcurses\fR color
-manipulation routines
+\fBstart_color\fR,
+\fBinit_pair\fR,
+\fBinit_color\fR,
+\fBhas_colors\fR,
+\fBcan_change_color\fR,
+\fBcolor_content\fR,
+\fBpair_content\fR,
+\fBCOLOR_PAIR\fR - \fBcurses\fR color manipulation routines
.SH SYNOPSIS
\fB# include <curses.h>\fR
.br
The \fBinit_pair\fR routine changes the definition of a color-pair. It takes
three arguments: the number of the color-pair to be changed, the foreground
-color number, and the background color number. The value of the first argument
-must be between \fB1\fR and \fBCOLOR_PAIRS-1\fR. The value of the second and
+color number, and the background color number.
+For portable applications:
+.TP 5
+-
+The value of the first argument
+must be between \fB1\fR and \fBCOLOR_PAIRS-1\fR.
+.TP 5
+-
+The value of the second and
third arguments must be between 0 and \fBCOLORS\fR (the 0 color pair is wired
-to white on black and cannot be changed). If the color-pair was previously
+to white on black and cannot be changed).
+.PP
+If the color-pair was previously
initialized, the screen is refreshed and all occurrences of that color-pair is
changed to the new definition.
+As an extension, ncurses allows you to set color pair 0 via
+the \fBassume_default_colors\fR routine, or to specify the use of
+default colors (color number \fB-1\fR) if you first invoke the
+\fBuse_default_colors\fR routine.
+
The \fBinit_color\fR routine changes the definition of a color. It takes four
arguments: the number of the color to be changed followed by three RGB values
(for the amounts of red, green, and blue components). The value of the first
Note that setting an implicit background color via a color pair affects only
character cells that a character write operation explicitly touches. To change
the background color used when parts of a window are blanked by erasing or
-scrolling operations, see \fBcurs_bkgd\fR(3x).
+scrolling operations, see \fBcurs_bkgd\fR(3X).
Several caveats apply on 386 and 486 machines with VGA-compatible graphics:
-
+.TP 5
+-
COLOR_YELLOW is actually brown. To get yellow, use COLOR_YELLOW combined with
the \fBA_BOLD\fR attribute.
-
+.TP 5
+-
The A_BLINK attribute should in theory cause the background to go bright. This
often fails to work, and even some cards for which it mostly works (such as the
Paradise and compatibles) do the wrong thing when you try to set a bright
"yellow" background (you get a blinking yellow foreground instead).
-
+.TP 5
+-
Color RGB values are not settable.
.SH PORTABILITY
This implementation satisfies XSI Curses's minimum maximums
The \fBinit_pair\fP routine accepts negative values of foreground
and background color to support the \fBuse_default_colors\fP extension,
but only if that routine has been first invoked.
+.PP
+The assumption that \fBCOLOR_BLACK\fR is the default
+background color for all terminals can be modified using the
+\fBassume_default_colors\fP extension,
+..
.SH SEE ALSO
\fBcurses\fR(3X),
\fBcurs_initscr\fR(3X),
\fBcurs_attr\fR(3X),
-\fBdft_fgbg\fR(3X)
+\fBdefault_colors\fR(3X)
.\"#
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