scroll.mouseWheelEnabled < boolean>

Enable or disable scrolling with mousewheel. Disabled by default. When set to true, layers can be scrolled both by dragging and with the mouse.
译：启用或禁用滚动鼠标滚轮。默认禁用。当设置为真，通过拖动用鼠标可以滚动层。

scroll = new ScrollComponent
    width: 100
    height: 100

# Allow scrolling with mouse 
scroll.mouseWheelEnabled = true

layerA = new Layer
    parent: scroll.content
    image: "images/bg.png"
    width: 100
    height: 200