/* * $Id: demo_keyok.c,v 1.3 2003/05/17 23:18:34 tom Exp $ * * Demonstrate the keyok() function. * Thomas Dickey - 2002/11/23 */#include <test.priv.h>#if defined(NCURSES_VERSION) && NCURSES_EXT_FUNCSintmain(int argc GCC_UNUSED, char *argv[]GCC_UNUSED){    int lastch = ERR;    int ch;    WINDOW *win;    initscr();    (void) cbreak();		/* take input chars one at a time, no wait for \n */    (void) noecho();		/* don't echo input */    printw("Typing any function key will disable it, but typing it twice in\n");    printw("a row will turn it back on (just for a demo).");    refresh();    win = newwin(LINES - 2, COLS, 2, 0);    scrollok(win, TRUE);    keypad(win, TRUE);    wmove(win, 0, 0);    while ((ch = wgetch(win)) != ERR) {	const char *name = keyname(ch);	wprintw(win, "Keycode %d, name %s\n",		ch,		name != 0 ? name : "<null>");	wclrtoeol(win);	wrefresh(win);	if (ch >= KEY_MIN) {	    keyok(ch, FALSE);	    lastch = ch;	} else if (lastch >= KEY_MIN) {	    keyok(lastch, TRUE);	}    }    endwin();    return EXIT_SUCCESS;}#elseintmain(void){    printf("This program requires the ncurses library\n");    ExitProgram(EXIT_FAILURE);}#endif