altKey

Type

function

Summary

Returns the state of the Alt key.

Syntax

the altKey

altKey()

Description

Use the altKey function to check whether the Alt key, Meta key, or Option key is being pressed. You can use altKey to add alternative capabilities to user actions such as clicking.

The altKey, optionKey, and metaKey functions all return the same value. Which one to use is a matter of preference. The terminology varies depending on platform. Users of different operating systems may know this key as the Option key (Mac OS systems), Meta key (Unix systems), or Alt key (Windows systems).

Examples

put the altKey into keyState

if the altKey is down then exit mouseUp

repeat until altKey() = up

Value

Name	Type	Description
return		The altKey function returns down if the key is pressed and up if it's not.

Related

message: optionKeyDown

constant: return

control structure: function

function: optionKey, value, keysDown

glossary: Meta key, return, function, Alt key, Option key

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

Platforms

desktop

server