#include <ncurses.h>

/*
 * Application demo
 */
int
main()
{
	initscr();
	start_color();
	clear();
	cbreak();
	noecho();
	keypad(stdscr, TRUE);

	refresh();

	init_pair(1, COLOR_WHITE, COLOR_BLUE);
	init_pair(2, COLOR_WHITE, COLOR_BLACK);

	wbkgd(stdscr, COLOR_PAIR(1));

	wmove(stdscr, 5, 5);
	waddstr(stdscr, "@");

	wmove(stdscr, 5, 10);
	waddch(stdscr, ACS_VLINE);

	mvwprintw(stdscr, 10, 5, "correct output (before mvwchgat)");
	mvwprintw(stdscr, 11, 5, "press any key");
	refresh();
	getch();

	mvwchgat(stdscr, 5, 5, 1, A_BOLD, 2, NULL);

	mvwprintw(stdscr, 10, 5, "still correct output (before mvwchgat on hline)");
	mvwprintw(stdscr, 11, 5, "press any key, ");
	refresh();
	getch();

	mvwchgat(stdscr, 5, 10, 1, A_BOLD, 2, NULL);

	mvwprintw(stdscr, 10, 5, "hline is broken now");
	mvwprintw(stdscr, 11, 5, "press any key, .. will quit ");
	refresh();
	getch();

	endwin();

	return 0;
}