如何在不使用第三方库的情况下检测C语言的键盘事件?我应该使用信号处理吗?
没有标准的方法,但这些应该让你开始.
视窗:
getch();
Unix的:
使用W. Richard Stevens的Unix编程书中的代码将终端设置为原始模式,然后使用read().
static struct termios save_termios; static int term_saved; int tty_raw(int fd) { /* RAW! mode */ struct termios buf; if (tcgetattr(fd, &save_termios) < 0) /* get the original state */ return -1; buf = save_termios; buf.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG); /* echo off, canonical mode off, extended input processing off, signal chars off */ buf.c_iflag &= ~(BRKINT | ICRNL | ISTRIP | IXON); /* no SIGINT on BREAK, CR-toNL off, input parity check off, don't strip the 8th bit on input, ouput flow control off */ buf.c_cflag &= ~(CSIZE | PARENB); /* clear size bits, parity checking off */ buf.c_cflag |= CS8; /* set 8 bits/char */ buf.c_oflag &= ~(OPOST); /* output processing off */ buf.c_cc[VMIN] = 1; /* 1 byte at a time */ buf.c_cc[VTIME] = 0; /* no timer on input */ if (tcsetattr(fd, TCSAFLUSH, &buf) < 0) return -1; term_saved = 1; return 0; } int tty_reset(int fd) { /* set it to normal! */ if (term_saved) if (tcsetattr(fd, TCSAFLUSH, &save_termios) < 0) return -1; return 0; }