介绍和分析了嵌入式实时操作系统VxWorks 及媒体库WindML 的结构和特点。结合 实际,应用WindML 提供的API 函数,对VxWorks 操作系统进行用户图开界面开发,研究在VxWorks 下开发图形用户界面的技术难点问题,并给出了问题解决方案和程序实现。 关键词:实时操作系统图形用户界面 VxWorks WindML 双缓冲 Abstract:This paper analyzes and introduces the structure and characteristic of a embedded real-time operating system VxWorks and its media library WindML.Applying the API functions supplied by WindML, the paper gives the program of using double buffer technology which can realize graphics outputting and eliminate its flickering on VxWorks Operating System. Key Words:Real time operation system GUI VxWorks WindML Double Buffering