本文首先简述了窗口系统与计算机会议系统之间的关系，并介绍了白板和指针在上述系统中的作用以及所应具有的功能。接着是对白板和指针在实现中所面临的问题的分析和相应的解决策略，包括白板和指针的实现方案、各种灵活的窗口操作与指针动作的关系以及白板和指针的同步等问题。 This article first briefly describes the relationship between the window system and the computer conferencing system, and introduces the whiteboard and the pointer in the above system and its functions should be. Then it analyzes the problems that the whiteboard and the pointer are facing in the realization and the corresponding strategies for solving them, including the realization of the whiteboard and the pointer, the relationship between various flexible window operations and the pointer movement, and the synchronization of the whiteboard and the pointer.