Filter refers to the object path of one event filter instance.
Filter指一个事件过滤器实例的对象路径。
Handler refers to the object path of one event handler instance.
Handler指一个事件处理程序实例的对象路径。
Conceptually, all applications that use D-BUS contain a set of objects, and messages are sent to and from specific objects — not applications — that are identified by an object path.
概念上，所有使用d -BUS的应用程序都包括一组对象，消息发送到或者发送自特定对象——不是应用程序——这些对象由对象路径来标识。
Conceptually, all applications that use D-BUS contain a set of objects, and messages are sent to and from specific objects — not applications — that are identified by an object path.
概念上，所有使用d -BUS的应用程序都包括一组对象，消息发送到或者发送自特定对象——不是应用程序——这些对象由对象路径来标识。
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