event.isShiftDown

概述

表示在键事件发生时 Shift 键是否按下或 Caps Lock 键是否启用。注意，如果刚被按下的是 leftShift、rightShift 或 capsLock 键，此属性保证返回 true。

示例

-- Called when a key event has been received
local function onKeyEvent( event )
    if event.isShiftDown then
        -- The Shift was held down for the given key
    else
        -- The Shift was not held down for the given key
    end
    return false
end

-- Add the key event listener
Runtime:addEventListener( "key", onKeyEvent )