kotlin-stdlib / org.w3c.dom.events / WheelEventInit WheelEventInit JS 1.1 interface WheelEventInit : MouseEventInit(source) Properties JS 1.1 deltaMode open var deltaMode: Int? JS 1.1 deltaX open var deltaX: Double? JS 1.1 deltaY open var deltaY: Double? JS 1.1 deltaZ open var deltaZ: Double?