中文摘要：

笔式用户界面是一种重要的Post-WIMP（window icon menu pointer）界面，它给用户提供了自然的交互方式．然而，当前的笔式用户界面工具箱大多是面向单用户任务的，不能很好地支持协作应用场景．通过对笔式交互特征和协作环境功能需求的分析，设计并实现了一个工具箱CoPen Toolkit，用于支持协作笔式用户界面的开发．它提供了灵活的架构和可扩展的组件，支持笔迹描述、事件处理和网络协作等功能．基于CoPen Toolkit，构造了多个原型系统，实践表明，它能够很好地支持协作笔式用户界面的开发．

英文摘要：

Pen-Based user interface is a primary Post-WIMP （window icon menu pointer） interface, and it provides natural interactions for users. However, the current toolkits for constructing pen-based user interface are built for single-user tasks, which can not support collaborative work well. This paper analyzes the features of pen-based interaction and collaboration environment. Furthermore, the design and implementation of a toolkit, CoPen Toolkit, which can support the development of collaborative pen-based user interfaces are discussed. CoPen Toolkit offers flexible architecture and extended components, which can support ink-based data, event processing, networked collaboration, etc. Based on CoPen Toolkit, several typical prototypes have been built, and the results show that it can support construction and fast-prototyping of collaborative pen-based user interfaces.