使用 UTF-8 和 PuTTY 时，NCURSES 边框打印为 q、x

Question

我正在尝试学习 ncurses 以向我的程序添加一些功能，但是我似乎无法将我的终端设置设置为默认 ncurses window 边框按预期显示的程度。

这是我为带框边框的 window 获得的输出：

  lqqqqqqqqk
  x        x
  x        x
  x        x
  mqqqqqqqqj

但是我应该得到这个：

  ┌────────┐
  │        │
  │        │
  │        │
  └────────┘

我唯一能找到解决这个问题的方法是将我的 PuTTY 删除字符集设置为 Latin-1 而不是 UTF-8，但这会弄乱我的所有其他应用程序，包括 VIM .

我发现了一些相关的 SO 问题 (1 and 2)，但是他们的解决方案都没有帮助我。我从第二个中取出的唯一有趣的事情是，如果我在我的命令行中运行 printf '244240240' 它打印出 └─┐ （这是正确的......）。

这是我用来测试的简单程序：

 #include <iostream>
 #include <ncurses.h>
 #include <string>
 #include <cstring>

 int main() {
     WINDOW *my_win;
     int startx, starty, width, height;
     int ch;

     initscr();
     cbreak();
     keypad(stdscr, TRUE);
     refresh();

     int height = 5;
     int width = 10;
     my_win = newwin(height, width, 1, 2);
     box(my_win, 0, 0);
     wrefresh(my_win);

     getch();

     endwin();
     return 0;
 }

知道我可能做错了什么吗？谢谢！

Answer 1

您没有初始化语言环境。否则，ncurses 将假设它可以使用终端描述。

进一步阅读：

ncurses 手册页，Initialization:

The library uses the locale which the calling program has initialized. That is normally done with setlocale:

setlocale(LC_ALL, "");

If the locale is not initialized, the library assumes that characters are printable as in ISO-8859-1, to work with certain legacy programs. You should initialize the locale and not rely on specific details of the library when the locale has not been setup.

ncurses 手册页，NCURSES_NO_UTF8_ACS:

During initialization, the ncurses library checks for special cases where VT100 line-drawing (and the corresponding alternate character set capabilities) described in the terminfo are known to be missing. Specifically, when running in a UTF-8 locale, the Linux console emulator and the GNU screen program ignore these. Ncurses checks the TERM environment variable for these. For other special cases, you should set this environment variable.

Answer 2

一个解决方案是在 putty 配置中确保选中“即使在 UTF-8 模式下也启用 VT100 线条图”。

Putty Screenshot

使用 UTF-8 和 PuTTY 时，NCURSES 边框打印为 q、x

NCURSES border printing as q, x, when using UTF-8 and PuTTY

c++

putty

ncurses