Hi all,
I need to know how to test a pressed key is arrowup or arrowdown and etc..
I found that the "echo" won't print anything if i enter the arrowup in the below code:
Then i find a way to achieve my goal.
problem is where can i find "ARROWUP" is shown as \[A because in my terminal the arrowup key is shown as [[A and i'm afraid i won't remember that someday.Any command to show that?
hi
i´m making a program, and i would like to know how can i know what key was pressed. i'm using Sun5.7 and C.
is there a keypress/keypressed function in C?
how can i know recognize the keys (enter, tab, shift, etc.)?
can i recognize two keys ? (shift+A, ctrl+C, etc)
any idea.. thanks (4 Replies)
I want my program(ksh) to execute further only if the return key is pressed.
Please help.
i have already tried "\n", "\r", "^M" .
Thanks in advance (2 Replies)
hi folks,
i am using sun solaris, when i press escape key in putty/netterm screen will blink for a second, plese let me know where this setting is done by my admin, what i feel is my admin must have set some control key for this so that screen will refresh each time i press escape key. please let... (1 Reply)
Hello friends,
I want to write a shell script in bash shell .
Working for the script is to detect any key pressed and disply on screen as
"you have pressed: "
For example if user pressed F5 then a messaged has to be displayed as
"you have pressed F5.
Thank you. (4 Replies)
hi Gurus, please why is this happening:
when i run this:
#!/bin/bash
declare -a name
declare -a ph
declare -a eid
r=0;
c=1;
i=1;
n=;
echo " name phone email_id"
while :
do
#if ; then
#break;
#else
echo -n "field $i:"; read name ph eid;
let "i++";
... (5 Replies)
Hello everyone.
I'm trying to create a script that waits a given amount of time unless a given key is pressed. I found a very useful thread here
https://www.unix.com/shell-programming-scripting/59605-trap-key-press-script.html
however, I cannot figure out a way of avoiding the keypress if the... (2 Replies)
Hi Experts,
I have a script in which I want to disable the "Enter" key press. Actually my script executes some process in background. So, till that background process is running, I don't want "Enter" key to be pressed by user. Is this can be achieved using trap command? (6 Replies)
So I mounted a 12.04 LTS ISO, exported it via apache. Goy my netinstall files in place. Pointed Foreman to my install media the Preseed config files run. Life is good.
Server comes up, I run apt-get update and blam:
: Failed to fetch... (0 Replies)
Discussion started by: general_lee
0 Replies
LEARN ABOUT PLAN9
readkey
readkey(3alleg4) Allegro manual readkey(3alleg4)NAME
readkey - Returns the next character from the keyboard buffer. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int readkey();
DESCRIPTION
Returns the next character from the keyboard buffer, in ASCII format. If the buffer is empty, it waits until a key is pressed. You can see
if there are queued keypresses with keypressed().
The low byte of the return value contains the ASCII code of the key, and the high byte the scancode. The scancode remains the same whatever
the state of the shift, ctrl and alt keys, while the ASCII code is affected by shift and ctrl in the normal way (shift changes case,
ctrl+letter gives the position of that letter in the alphabet, eg. ctrl+A = 1, ctrl+B = 2, etc). Pressing alt+key returns only the scan-
code, with a zero ASCII code in the low byte. For example:
int val;
...
val = readkey();
if ((val & 0xff) == 'd') /* by ASCII code */
allegro_message("You pressed 'd'
");
if ((val >> 8) == KEY_SPACE) /* by scancode */
allegro_message("You pressed Space
");
if ((val & 0xff) == 3) /* ctrl+letter */
allegro_message("You pressed Control+C
");
if (val == (KEY_X << 8)) /* alt+letter */
allegro_message("You pressed Alt+X
");
This function cannot return character values greater than 255. If you need to read Unicode input, use ureadkey() instead.
SEE ALSO install_keyboard(3alleg4), ureadkey(3alleg4), keypressed(3alleg4), clear_keybuf(3alleg4), simulate_keypress(3alleg4)Allegro version 4.4.2 readkey(3alleg4)