使用ncurses显示wchar_t [英] Display wchar_t using ncurses

问题描述

我目前正在从事一个C ++项目，我需要在其中显示一些扩展字符(wchar_t).

i'm currently working on a C++ project in which I need to display some extended characters (wchar_t).

主要问题是，即使它在C中正常工作(使用wprintf)，也不能在使用mvwaddwstr或waddwstr的c ++中工作.当然，我已经将语言环境设置为:setlocale(LC_ALL, "");，并且什么都不会显示.

The main problem is that, even if it works fine in C (using wprintf), it doesn't work in c++ using mvwaddwstr or waddwstr. Of course, i've set the locale like that: setlocale(LC_ALL, "");, and nothing is displayed.

有人以前有这个问题吗，或者对此有一个想法?

Does someone got this problem before, or has an idea about that?

谢谢.

这是代码:

  struct charMap { int x; int y; wchar_t value };
  int                   i, x, y;
  wchar_t               str[2];
  struct charMap _charMap[2] = {
    {0,0,9474}
    {29, 29, 9474}
  };
  initscr();
  setlocale(LC_ALL, "");
  for (y = 0 ; y < 30 /* length */ + 2 ; y++) {
    for (x = 0 ; x < 30 /* width */ + 2; x++) {
      for (i = 0 ; i < 2 ; i++) {
        if ((x == _charMap[i].x || _charMap[i].x == -1) &&
            (y == _charMap[i].y || _charMap[i].y == -1)) {
          str[0] = _charMap[i].value;
          str[1] = L'\0';
          mvwaddwstr(stdscr, y, x, str);
          break;
        }
      }
    }
  }
  refresh();
  while(1);

_charMap是一个结构表，其中包含有用的值以便于进行比较(避免使用笨重的if ... else if ... else结构). _charMap[].value是wchar_t，_charMap[].x是int，例如_charMap[].y.

_charMap is a struct table containing useful values for easy comparison (avoiding the heavy if ... else if ... else structure). _charMap[].value is a wchar_t, and _charMap[].x is an int, like _charMap[].y.

推荐答案

您需要setlocale(LC_ALL, "") 之前进行initscr().

一个工作示例:

#include <ncursesw/ncurses.h>
#include <locale.h>
#include <wchar.h>

int main() {  
    setlocale(LC_ALL, "");
    initscr();
    wchar_t wstr[] = { 9474, L'\0' };
    mvaddwstr(0, 0, wstr);
    refresh();
    getch();
    endwin();
    return 0;
}

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