如何获取D编程语言+ Tango中的单个按键？ [英] How can I grab single key hit in D Programming Language + Tango?

问题描述

我阅读了文章，并且尝试使用D编程语言进行练习，但在第一次练习中遇到问题。

I read this article and try to do the exercise in D Programming Language, but encounter a problem in the first exercise.

（1）显示一系列数字
（1,2,3,4，5 .... etc）在无限的
循环中。如果有人敲
的特定键（说
ESCAPE键），程序应该退出。

(1) Display series of numbers (1,2,3,4, 5....etc) in an infinite loop. The program should quit if someone hits a specific key (Say ESCAPE key).

无限循环不是一个大问题，但其余的是。我怎样才能抓住D / Tango的关键点？在探戈常见问题中，它说使用C函数kbhit（）或get（），但是据我所知，它们不在C标准库中，也不存在于我用来编程的Linux机器随附的glibc中。

Of course the infinite loop is not a big problem, but the rest is. How could I grab a key hit in D/Tango? In tango FAQ it says use C function kbhit() or get(), but as I know, these are not in C standard library, and does not exist in glibc which come with my Linux machine which I use to programming.

我知道我可以使用某些第三方库，例如 ncurses ，但是与kbhit（）或get（）一样，它也有相同的问题，它不是C或D中的标准库，也不是预装在Windows上。我希望我可以仅使用D / Tango来完成此练习，并且可以在Linux和Windows计算机上运行它。

I know I can use some 3rd party library like ncurses, but it has same problem just like kbhit() or get(), it is not standard library in C or D and not pre-installed on Windows. What I hope is that I could done this exercise use just D/Tango and could run it on both Linux and Windows machine.

我该怎么做？

推荐答案

使用D编程语言的方法如下：

Here's how you do it in the D programming language:

    import std.c.stdio;
    import std.c.linux.termios;

    termios  ostate;                 /* saved tty state */
    termios  nstate;                 /* values for editor mode */

    // Open stdin in raw mode
    /* Adjust output channel        */
    tcgetattr(1, &ostate);                       /* save old state */
    tcgetattr(1, &nstate);                       /* get base of new state */
    cfmakeraw(&nstate);
    tcsetattr(1, TCSADRAIN, &nstate);      /* set mode */

   // Read characters in raw mode
    c = fgetc(stdin);

    // Close
    tcsetattr(1, TCSADRAIN, &ostate);       // return to original mode

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