The first line will pop up a message on the control nodes' display (if X Window System is active), letting the user know that the laptop is inactive and needs to be powered down.

第一行将在控制节点的界面上弹出消息（如果 X Window System 处于活动状态），从而让用户知道笔记本处于非活动状态并且需要关闭。

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

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。

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System error code 1002 means "the window cannot act on the sent message."

系统错误代码1002的意思是“窗口无法在已发送的消息采取行动。”

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