release/src/router/libncurses/test/demo_keyok.c

   1 /****************************************************************************
   2  * Copyright (c) 2002-2003,2006 Free Software Foundation, Inc.              *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  28 /*
  29  * $Id: demo_keyok.c,v 1.5 2006/11/04 20:09:51 tom Exp $
  30  *
  31  * Demonstrate the keyok() function.
  32  * Thomas Dickey - 2002/11/23
  33  */
  34
  35 #include <test.priv.h>
  36
  37 #if defined(NCURSES_VERSION) && NCURSES_EXT_FUNCS
  38 int
  39 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
  40 {
  41     int lastch = ERR;
  42     int ch;
  43     WINDOW *win;
  44
  45     initscr();
  46     (void) cbreak();            /* take input chars one at a time, no wait for \n */
  47     (void) noecho();            /* don't echo input */
  48
  49     printw("Typing any function key will disable it, but typing it twice in\n");
  50     printw("a row will turn it back on (just for a demo).");
  51     refresh();
  52
  53     win = newwin(LINES - 2, COLS, 2, 0);
  54     scrollok(win, TRUE);
  55     keypad(win, TRUE);
  56     wmove(win, 0, 0);
  57
  58     while ((ch = wgetch(win)) != ERR) {
  59         const char *name = keyname(ch);
  60         wprintw(win, "Keycode %d, name %s\n",
  61                 ch,
  62                 name != 0 ? name : "<null>");
  63         wclrtoeol(win);
  64         wrefresh(win);
  65         if (ch >= KEY_MIN) {
  66             keyok(ch, FALSE);
  67             lastch = ch;
  68         } else if (lastch >= KEY_MIN) {
  69             keyok(lastch, TRUE);
  70         }
  71     }
  72     endwin();
  73     ExitProgram(EXIT_SUCCESS);
  74 }
  75 #else
  76 int
  77 main(void)
  78 {
  79     printf("This program requires the ncurses library\n");
  80     ExitProgram(EXIT_FAILURE);
  81 }
  82 #endif