协议栈采用分层结构、消息驱动机制。

This protocol adopts layer structure and message driven mechanism.

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同时，该设计还论述了嵌入式窗口系统的设计原理，并分析了三项关键的设计技术：消息驱动机制、屏幕管理技术和资源管理技术。

It also presents the design principle for embedded window system and three key technology which are message driving, screen managing and resource managing.

youdao

同时，该设计还论述了嵌入式窗口系统的设计原理，并分析了三项关键的设计技术：消息驱动机制、屏幕管理技术和资源管理技术。

It also presents the design principle for embedded window system and three key technology which are message driving, screen managing and resource managing.

youdao