使用C或C ++从控制台获取原始输入 [英] Getting raw input from console using C or C++

问题描述

/* Initialize new terminal i/o settings */
static struct termios old, new1;
void initTermios(int echo) {
    tcgetattr(0, &old); /* grab old terminal i/o settings */
    new1 = old; /* make new settings same as old settings */
    new1.c_lflag &= ~ICANON; /* disable buffered i/o */
    new1.c_lflag &= echo ? ECHO : ~ECHO; /* set echo mode */
    tcsetattr(0, TCSANOW, &new1); /* use these new terminal i/o settings now */
}

/* Restore old terminal i/o settings */
void resetTermios(void) {
    tcsetattr(0, TCSANOW, &old);
}

如何获取箭头键作为输入(可能是单个字符)，当前代码对我需要的所有其他东西都适用...请使用 ncurses

How can I get arrow key as input (possibly as a single character), the current code works good for all other things I need... Please no solution with ncurses

推荐答案

您是否尝试过read函数?

这对cygwin g ++来说适用于我，不需要Linux即可方便地进行测试:

This works for me with cygwin g++, don't have linux handy to test:

#include <unistd.h>
#include <termios.h>
#include <stdio.h>

/* Initialize new terminal i/o settings */
static struct termios old, new1;
void initTermios(int echo) {
    tcgetattr(0, &old); /* grab old terminal i/o settings */
    new1 = old; /* make new settings same as old settings */
    new1.c_lflag &= ~ICANON; /* disable buffered i/o */
    new1.c_lflag &= echo ? ECHO : ~ECHO; /* set echo mode */
    tcsetattr(0, TCSANOW, &new1); /* use these new terminal i/o settings now */
}

/* Restore old terminal i/o settings */
void resetTermios(void) {
    tcsetattr(0, TCSANOW, &old);
}

int main(void)
{
    char c;
    initTermios(0);
    while (1) { read(0, &c, 1); printf("%d\n", c); }
}

正如@Fiktik指出的那样，回声设置已损坏，但我使用的是问题中的代码，未做任何更改.

As @Fiktik noted, the echo setup is broken, but I'm using the code in the question without changes.

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