嵌入式税控机GUI系统设计与实现

本文从Linux 系统的体系结构从发，分析了作为华工II 型税控收款机界面子系统ESCUT GUI 系统的构成。结合基于嵌入式Linux 的税控收款机的开发工作，通过对ESCUT GUI
窗口在实现过程中的设计与应用，详细说明了整个ESCUT GUI 系统的设计，并详细论述GUI系统的窗口的键盘消息响应、鼠标消息响应、窗口管理等GUI 的关键技术。通过例子说明了GUI 系统的移植性及其方法。最后，结合此GUI 系统的特点和实践，总结出ESCUT GUI 的特点并给出了其适用的场合。
关键词：嵌入式Linux；GUI；消息响应；税控收款机；
Abstract: This article start from the architectural of the Linux system, analyze the structure of
ESCUT GUI. Combining development of embedded Linux in Fiscal Cash Register, this article
discusses the whole design of the ESCUT GUI by illustrating the design of Window, and discuss mouse message, keyboard message, window management and so on, with the example of windows of the system. Transplantation of GUI is explained by an example. Finally, it summarize the characteristics of the GUI system, and show its application occasions.
Key words: embedded Linux; GUI; Key Message; fiscal cash register