In the research on gesture interaction, we use it as the main command interaction method under the pen user interface environment.
在手势交互方面，本文把它作为笔式界面环境下应用的主要交互手段。
To solve this problem, this paper designs and implements a geometric teaching system based on PUI (Pen User Interface), and applies technique of bidirectional geometrical constraint to this system.
针对这个问题该文基于人机交互中的笔交互技术，设计并实现了一套几何教学系统，并将双向几何约束的相关技术应用于该系统中。
Occurs on the application UI (user interface) thread when the user lifts the tablet pen from the digitizer.
当触笔移到数字化仪上时，在应用程序ui(用户界面)线程上发生。
Occurs on the application UI (user interface) thread when the user lifts the tablet pen from the digitizer.
当触笔移到数字化仪上时，在应用程序ui(用户界面)线程上发生。
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