el:key [BASIC 256 - Language Documentation]

# BASIC 256 - Language Documentation

el:key

## Key

### Format

key
key()

### Description

Immediately returns an integer value corresponding to the currently pressed keyboard key. If no key has been pressed since the last call to the key function then the number zero (0) will be returned. This function returns the code for the key pressed not always the ASCII value of the character.

### Note

    if key = 47 then print key

will not display the desired results, because it's calling key twice in succession, and will return different values each time. This code will do what you want:

    a = key
    if a = 47 then print a

### Partial List of Keys

ESC=16777216 | Space=32
0=48 | 1=49 | 2=50 | 3=51 | 4=52 | 5=53 | 6=54 | 7=55
8=56 | 9=57
A=65 | B=66 | C=67 | D=68 | E=69 | F=70 | G=71 | H=72
I=73 | J=74 | K=75 | L=76 | M=77 | N=78 | O=79 | P=80
Q=81 | R=82 | S=83 | T=84 | U=85 | V=86 | W=87 | X=88
Y=89 | Z=90
Down Arrow=16777237 | Up Arrow=16777235 | Left Arrow=16777234 | Right Arrow=16777236 |

Click here for a complete list of key values

### Example

    #press any keys
    loop:
    pause 1
    a = key
    print a+"  "+chr(a)
    goto loop

el/key.txt · Last modified: 2014/01/11 23:26 (external edit)