The cancellation can happen within a certain scope optionally, which means you cannot use a human task to meet this requirement. Instead, you can use the event handler to meet this requirement.
取消动作可以在一定范围内随时发生，这意味着您不能使用一项人工任务来满足这个需求，而是应使用事件处理程序。
We recommend that you use this naming convention when defining event handlers for your own events, but it is not required; you can use any valid subroutine name.
建议使用此命名约定定义您自己事件的事件处理程序，但这并不是必选的方法；您可以使用任何有效的子例程名称。
We recommend that you use this naming convention when defining event handlers for your own events, but it is not required; you can use any valid subroutine name.
建议使用此命名约定定义您自己事件的事件处理程序，但这并不是必选的方法；您可以使用任何有效的子例程名称。
应用推荐