使用ncurses在C中打印Unicode字符 [英] Print Unicode characters in C, using ncurses

问题描述

我必须在C中绘制一个盒子，使用ncurses;

首先，为了简单起见，我定义了一些值：

  #define RB\e（0 \x6a\e（B（例如ASCII 188，右下）
  

我使用gcc编译了Ubuntu，并使用 -finput-charset = UTF-8 flag。

但是，如果我尝试使用addstr或printw进行打印，我会得到hexa代码
我在做什么错了？

解决方案

有几个问题：

• if你的程序写的东西像\e（0x6a）（B使用 addstr ，那么ncurses（任何 curses实现）都会将单个字符转换为可打印格式，如 addch 手册页。


• ncurses支持使用符号（例如 ACS_HLINE ）通常使用的伪图形的线图，这些符号是 A_ALTCHARSET 属性合并。您可以阅读有关 Line Graphics < addch 手册页。


• 代码 0x6a 是ASCII j ，其中（给定VT100风格的映射）将是左下角。这个curses符号是 ACS_LRCORNER 。


• 不能用 addstr ;而不是 addch ， addchstr 很有用。还有一些面向线画的功能（请参见 box 和朋友）。


• 在Ubuntu中运行时，您的区域设置编码可能是UTF-8。为了使程序正常工作，它应该按照初始化部分。特别是：
  
  

  setlocale（LC_ALL，）;
  
  

  另外，你的程序应该链接到ncurses （ -lncursesw ）使用UTF-8，在Ubuntu上编译时，为了使用正确的头文件定义，你应该定义 _GNU_SOURCE 。

/ li>


I have to draw a box in C, using ncurses;

First, I have defined some values for simplicity:

#define RB "\e(0\x6a\e(B"  (ASCII 188,Right bottom, for example)

I have compiled with gcc, over Ubuntu, with -finput-charset=UTF-8 flag.

But, if I try to print with addstr or printw, I get the hexa code. What I`m doing wrong?

解决方案

A few issues:

• if your program writes something like "\e(0\x6a\e(B" using addstr, then ncurses (any curses implementation) will translate the individual characters to printable form as described in the addch manual page.
• ncurses supports line-drawing for commonly-used pseudo-graphics using symbols (such as ACS_HLINE) which are predefined characters with the A_ALTCHARSET attribute combined. You can read about those in the Line Graphics section of the addch manual page.
• the code 0x6a is ASCII j, which (given a VT100-style mapping) would be the lower left corner. The curses symbol for that is ACS_LRCORNER.
• you cannot write the line-drawing characters with addstr; instead addch, addchstr are useful. There are also functions oriented to line-drawing (see box and friends).

• running in Ubuntu, your locale encoding is probably UTF-8. To make your program work properly, it should initialize the locale as described in the Initialization section of the ncurses manual page. In particular:

  setlocale(LC_ALL, "");

  Also, your program should link against the ncursesw library (-lncursesw) to use UTF-8, rather than just ncurses (-lncurses).

• when compiling on Ubuntu, to use the proper header definitions, you should define _GNU_SOURCE.

这篇关于使用ncurses在C中打印Unicode字符的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！