arrow keys in linux

This is a discussion on arrow keys in linux within the Linux Programming forums, part of the Platform Specific Boards category; How I can read when the user press an arrows keys in c/c++? thx Lollo...

  1. #1
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    arrow keys in linux

    How I can read when the user press an arrows keys in c/c++?

    thx
    Lollo

  2. #2
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    As long as you are reading the "raw keys", you should be able to read out the escape-sequence of the keys. In normal mode, you are reading the "cooked" result of the input, so you don't get individual key-presses, but rather the input that the IO subsystem has "cooked" for you.

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    can you show me a snippet which do that I need?
    thx

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    It's worth noting here that the escape sequences are "multicharacter" sequences, so you will either have to read multiple characters with a timeout when there's nothing more to read, or parse the input intelligently.

    Another option is to use some sort of curses library - ncurses for example.

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    Ok...I use ncurses...

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    I'm using eclipse to develope...using ncurser when use the function
    "initscr"
    I get
    "Error opening terminal: unknown."

    ...why?

  7. #7
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    Not sure, what terminal type is it reporting?

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    eclipse use his embedded console...perhaps is this the problem

  9. #9
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    Quote Originally Posted by lollobrigido View Post
    eclipse use his embedded console...perhaps is this the problem
    Probably - try running your application in it's own window.

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    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

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