CallbackEventHandler.RegisterCallback
public void RegisterCallback(EventCallback<TEventType> callback,
UIElements.TrickleDown useTrickleDown);
public void RegisterCallback(EventCallback<TEventType,TUserArgsType> callback,
TUserArgsType userArgs,
UIElements.TrickleDown useTrickleDown);
Parameters
| callback | The event handler to add. | |
| useTrickleDown | By default, this callback is called during the BubbleUp phase. Pass TrickleDown.TrickleDown to call this callback during the TrickleDown phase. | |
| userArgs | Data to pass to the callback. |
Description 描述
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.