Experimental: this API is experimental and might be changed or removed in the future.

CallbackEventHandler

class in UnityEngine.Experimental.UIElements

Implements interfaces:IEventHandler

Description

Interface for classes capable of having callbacks to handle events.

HandleEvent	Handle an event, most often by executing the callbacks associated with the event.
HasBubbleUpHandlers	Return true if event handlers for the event propagation BubbleUp phase have been attached on this object.
HasTrickleDownHandlers	Returns true if event handlers, for the event propagation TrickleDown phase, are attached to this object.
RegisterCallback	Adds an event handler to the instance. If the event handler has already been registered for the same phase (either TrickleDown or BubbleUp) then this method has no effect.
SendEvent	Sends an event to the event handler.
UnregisterCallback	Remove callback from the instance.

对文档有任何疑问，请移步至开发者社区提问，我们将尽快为您解答