Keyboard input/Keypress check: Difference between revisions

=={{header|Wren}}==

<lang ecmascript>import "scheduler" for Scheduler

import "timer" for Timer

import "io" for Stdin, Stdout

Stdin.isRaw = true // no echoing or buffering

var b

Scheduler.add {

b = Stdin.readByte()

}

System.print("Awaiting keypress..")

Timer.sleep(2000) // allow 2 seconds say

if (b) {

System.write("The key with code %(b) was pressed")

System.print((b > 31 && b < 127) ? " namely '%(String.fromByte(b))'." : ".")

} else {

System.print("No key was pressed, carrying on...")

}

Stdin.isRaw = false</lang>

{{out}}

Sample session when 'a' key pressed.

<pre>

Awaiting keypress..

The key with code 97 was pressed namely 'a'.

</pre>