// hascolors - does the terminal have colors? if so, try to
// change a color

#include <curses.h>
#include <err.h>
#include <locale.h>
#include <stdlib.h>

typedef void (*call)(void);

void
withcolor(void)
{
	attron(COLOR_PAIR(1));
	printw("has colors");
	attroff(COLOR_PAIR(1));
}

void
withoutcolor(void)
{
	attron(A_BOLD);
	printw("no colors");
	attroff(A_BOLD);
}

int
main(void)
{
	call fn;
	int status;
	setlocale(LC_ALL, "");
	initscr();
	if (has_colors()) {
		start_color();
		init_color(COLOR_RED, 0, 800, 0);
		init_pair(1, COLOR_RED, COLOR_BLACK);
		fn = withcolor;
		status = 0;
	} else {
		fn = withoutcolor;
		status = 1;
	}
	fn();
	getch(); // wait for "any" key...
	endwin();
	exit(status);
}