arrow keys in linux

[lollobrigido]

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

thx
Lollo

[matsp]

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.

--
Mats

[lollobrigido]

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

[matsp]

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.

--
Mats

[lollobrigido]

Ok...I use ncurses...

[lollobrigido]

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

...why?

[matsp]

Not sure, what terminal type is it reporting?

--
Mats

[lollobrigido]

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

[matsp]

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