这种回调方法在异步网络框架中很常见。
This callback approach is common in asynchronous networking frameworks.
关于回调：Spring用于粘合jpa、Jms等框架的大多数胶水代码都是基于模板模式，比如JpaTemplate、JmsTemplate等。
Considering callbacks: Most of Spring's glue code to other frameworks like Jpa, Jms etc. is based on the template pattern, such as JpaTemplate, JmsTemplate etc.
UMDF使用引用计数方案来管理回调对象和框架对象的寿命。
UMDF uses a reference-counting scheme to manage the lifetime of callback objects and framework objects.
驱动程序通过传递一个接口指针给分发相关事件的框架对象，来注册回调对象。
Drivers register callback objects by passing a pointer to one of the object's interfaces to the framework object that raises the related event.
驱动程序通过传递一个接口指针给分发相关事件的框架对象，来注册回调对象。
Drivers register callback objects by passing a pointer to one of the object's interfaces to the framework object that raises the related event.
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