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XWindow 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。
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。
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。”
The system sends a WM_PAINT message to a window whenever its update region is not empty and there are no other messages in the application queue for that window.
该系统发送一个WM_PAINT消息到一个窗口时，它的更新区域不为空，并在该窗口的消息队列中没有其他消息。
The system sends a WM_PAINT message to a window whenever its update region is not empty and there are no other messages in the application queue for that window.
该系统发送一个WM_PAINT消息到一个窗口时，它的更新区域不为空，并在该窗口的消息队列中没有其他消息。
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