Graphical user interface is an important part of embedded system and the hub for users to interact with the system. How to establish an effective message mechanism to realize the transmission of messages from users to the system and how to reflect the system\'s processing of messages to the graphical user interface are important links in the development of embedded systems. This article analyzes the message mechanism of MiniGUI and introduces a simple implementation method of the message mechanism based on embedded systems. Compared with the message mechanism in professional GUI middleware, it has a perfect structure, which is convenient for system integration and is very suitable for some embedded applications with lightweight graphical user interfaces. Keywords: embedded system; MiniGUI; message mechanism; image interface developer; event driver Abstract: GUI (Graphics User Interface) is an important part of embedded system, it is thehinge of the interaction between the users and the system. How to implement an effective message mechanism for the system to receive messages form the users and how to reflect on the GUI after dealing with the messages is a crucial step in embedded system developing. This paper analyses the message mechanism of MiniGUI and then give out a method to implement a message mechanism based on embedded system. This mechanism is simpler compared with some other professional GUI middleware, but it also has a integrated structure and easy to be integrated into the system,it is adapted to be used in the embedded systems which just need a simple GUI .Key Words: embedded system; MiniGUI; message mechanism; image interface developer; event driver
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