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From: Robert Nordier <rnordier@iafrica.com>
Message-Id: <199706220711.JAA03964@eac.iafrica.com>
Subject: Re: ncurses
In-Reply-To: <Pine.BSF.3.95q.970621185035.8932A-100000@aak.anchorage.net> from Steve Howe at "Jun 21, 97 06:53:21 pm"
To: un_x@anchorage.net (Steve Howe)
Date: Sun, 22 Jun 1997 09:11:55 +0200 (SAT)
Cc: questions@FreeBSD.ORG
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Steve Howe wrote:
> 
> i color with ncurses working ok?
> i have my own windowing C 
> routines, but am looking for
> some portable way to print in color.
> 
> ncurses just seems to make my screen black & white,
> no matter what colors i choose, no matter what color
> my ttyv? was previously.

Color works fine.  Try the example below.

--
Robert Nordier


#include <ncurses.h>
#include <string.h>

#define rightstr(s, n) ((s) + sizeof(s) - (n) - 1)
#define spaces(n) rightstr(spcstr, n)

#define ATTR_BACK  0
#define ATTR_TEXT  1

chtype attrib[2] = {
    A_NORMAL,
    A_REVERSE
};

static char spcstr[132];
static void clearwin(WINDOW * win);

int
main(void)
{
    memset(spcstr, ' ', sizeof(spcstr));
    initscr();
    start_color();
    cbreak();
    noecho();
    nonl();
    if (has_colors()) {
	init_pair(1, COLOR_WHITE, COLOR_BLUE);
	attrib[ATTR_BACK] = COLOR_PAIR(1);
	init_pair(2, COLOR_RED, COLOR_GREEN);
	attrib[ATTR_TEXT] = COLOR_PAIR(2);
    }
    wattrset(stdscr, attrib[ATTR_BACK]);
    clearwin(stdscr);
    wattrset(stdscr, attrib[ATTR_TEXT]);
    mvaddstr((LINES - 2) / 2, (COLS - 12) / 2, "Hello World!");
    move(LINES - 1, 0);
    getch();
    wclear(stdscr);
    refresh();
    endwin();
    return 0;
}

static void
clearwin(WINDOW * win)
{
    int y, x, i;

    getmaxyx(win, y, x);
    if (y == LINES)
	y--;
    for (i = 0; i < y; i++)
	mvwaddstr(win, i, 0, spaces(x));
}
/* end */