/* Example of attribute mangling in mvchgat().  Compile with

gcc -Wall -Wextra -pedantic -o box box.c -lncurses

   Run it;  you get a box that says "Hit any key".  Do so,  and we
try to set everything to be color pair 1 (green on blue).  This
works,  but in the process,  the box attributes (A_ALTCHARSET)
are removed.  Happens in PDCurses and ncurses.  Should it? */

#include <stdlib.h>
#include <string.h>
#include <curses.h>

int main( void)
{
    WINDOW *win;
    int i;

    initscr();
    start_color();
    noecho();
    refresh( );
    win = newwin( LINES / 2, COLS / 2, LINES / 4, COLS / 4);
    box( win, 0, 0);
    mvwaddstr( win, 2, 2, "Hit any key");
    wrefresh( win);
    getch();

               /* Make the window odd colors: */
    init_pair( 1, COLOR_GREEN, COLOR_BLUE);
    for( i = 0; i < LINES / 2; i++)
       mvwchgat( win, i, 0, COLS / 2, 0, 1, NULL);
    refresh( );
    wrefresh( win);
    getch();

            /* Clean up and exit : */
    delwin( win);
    endwin( );
    return( 0);
}