widget.addEventListener(eventId, callback)

Register a listener to the UI widget and the given callback function will be executed when the specified event is triggered.

Type

(eventId: EventId, callback: (event: Event) => void) => void

Parameters

Parameter	Description	Type
eventId	Event type. (e.g., hmUI.event.MOVE, hmUI.event.CLICK_DOWN, etc.)	EventId
event	Event details, refer to different events.	object

EventId

Value	Description
hmUI.event.MOVE	Slide
hmUI.event.CLICK_DOWN	Press
hmUI.event.CLICK_UP	Lift up
hmUI.event.MOVE_IN	Move in
hmUI.event.MOVE_OUT	Move out

Code example

const img_bkg = hmUI.createWidget(hmUI.widget.IMG)

img_bkg.addEventListener(hmUI.event.CLICK_DOWN, function (info) {
  //Registering event listeners.
  console.log(info.x)
})