如何在C中的控制台中禁用箭头键

Question

I'm using the termios.h header file to implement a console in RAW mode and I'm trying to disable the arrow keys. I'm currently using the ctype.h file to test if the char I get from console is alphanumerical, however the up arrow is sent as the letter A.

How do I disable the arrow keys.

Thanks

Answer 1

There were probably characters ahead of the A that were thrown out. You need to figure out what those characters were. The following code will help you figure out the sequence of characters that each arrow key generates. Once you know that, you can modify the code to ignore those sequences.

int main( void )
{
    int c;

    while ( (c = getchar()) != EOF )
        printf( "%02x\n", c );
}

Answer 2

What you think to use libreadline?

I use this library in a project where i build a console, and works so good. You can see the documentation here: http://cnswww.cns.cwru.edu/php/chet/readline/rltop.html