ncurses与readline结合

 

#define _XOPEN_SOURCE 700       /* for wcswidth and 700 is for mbsnrtowcs */

#include<wchar.h>

#include<ncurses.h>       /* ncurses.h includes stdio.h */

#include<stdlib.h>

#include<string.h>

#include<readline/readline.h>

#include<locale.h>

  

int mygetstr(char *str, int y, int x){

  WINDOW *win;

  int size, col;

  int ok = 0;

  int width;

  wchar_t wstr[80];

  char *p;

  

  getmaxyx(stdscr, size, col);

  

  void getaline(char *s){

    str = s;

    rl_callback_handler_remove();

    ok = 1;

  }

  

  rl_callback_handler_install("", getaline);

  win = newwin(1, col-x, y, x);

  while(1){

    rl_callback_read_char();

    if(ok)

      break;

    werase(win);

    strncpy(str, rl_line_buffer, 80);

    p = str;

    /* how many column chars before cursor occupies? */

    size = mbsnrtowcs(wstr, (const char**)&p, rl_point, 80, NULL);

    width = wcswidth(wstr, size);

    mvwprintw(win, 0, 0, "%s", str);

    /* put the cursor at right column */

    wmove(win, 0, width);

    wrefresh(win);

  }

  delwin(win);

  return 0;

}

  

int main(){

  char mesg[] = "Enter a string: ";

  char str[80];

  int row, col;

  

  setlocale(LC_ALL, "");        /* make ncurses handle Chinese correctly */

  initscr();

  getmaxyx(stdscr, row, col);

  mvprintw(row / 2, (col - strlen(mesg)) / 2, "%s", mesg);

  refresh();

  mygetstr(str, row / 2, (col + strlen(mesg)) / 2);

  mvprintw(LINES - 2, 0, "You Entered: %s", str);

  getch();

  endwin();

  

  return 0;

}