基于VSTO技术的Office计时器插件的设计与实现

摘要

计时器被广泛应用于演讲比赛和答辩陈述等需要限时完成的多种场合。针对实际应用中计时器只能起到计时作用，而无法真正干预到演讲者演讲超时行为的问题，文章介绍了基于VSTO技术的Office计时器插件的设计与实现方法。该计时器插件在演讲者无意或因其他操作需退出幻灯片放映状态时，仍可继续计时，从而保证整个演讲过程计时的连续性。同时，还可以通过计时结束时强制退出幻灯片放映状态或关闭演示文稿等手段对超时情况进行干预，从技术层面保证行为与时效的一致统一，经实践证明该插件使用效果良好。%The timer is widely used in the speech contest, defense statement and other occasions that needing for a limited time to complete. In view of the actual application that the timer can only play a role of timing, and cannot really interfere with the speaker’s speech timeout behaviors, this paper introduces the design and implementation methods of Office timer plug-in based on VSTO technology. This timer plug-in, when the speaker accidentally or because of other operations needs to exit the slide show state, can still continue to time, so as to ensure the continuity of the whole speech process. At the same time, it can also be used to intervene in the timeout by forced exiting slide show state and closing the presentation, from the technical level to ensure the consistency of the behavior and time, the time plug-in has been proved to be effective by practice.