| triggerEvent | 触发上下文菜单显示的事件。 |
| menu | 要填充的菜单。 |
| target | 触发上下文菜单显示的元素。 |
void Returns an initialized event.
Retrieves an event from the event pool. Use this method to retrieve a mouse event and initialize the event, instead of creating a new mouse event. Events obtained from this method should be released back to the pool using Dispose().