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

CallbackEventHandler.HasTrickleDownHandlers

マニュアルに切り替える
public bool HasTrickleDownHandlers ();

戻り値

bool True if object has event handlers for the TrickleDown phase.

説明

Returns true if event handlers, for the event propagation TrickleDown phase, are attached to this object.