本文從Linux 系統的體系結構從發，分析了作為華工II 型稅控收款機界面子系統ESCUT GUI 系統的構成。結合基于嵌入式Linux 的稅控收款機的開發工作，通過對ESCUT GUI
窗口在實現過程中的設計與應用，詳細說明了整個ESCUT GUI 系統的設計，并詳細論述GUI系統的窗口的鍵盤消息響應、鼠標消息響應、窗口管理等GUI 的關鍵技術。通過例子說明了GUI 系統的移植性及其方法。最后，結合此GUI 系統的特點和實踐，總結出ESCUT GUI 的特點并給出了其適用的場合。
關鍵詞：嵌入式Linux；GUI；消息響應；稅控收款機；
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