I recently bought my first Bamboo, a Wacom tablet that recognises letters from shapes drawn with the stylus. It tickled memories of my first experience with gesture-controlled application: using mouse gestures, web browsers such as Maxthon (and later Opera) allowed users to quickly move back and forth through webpages in the history, switch between different tabs, and so on. I was facinated by its neat user interface, as it takes away traditional mouse clicks. Of course, sophisticated gesture-controlled devices such as the Kinect, iPad and iPhone are now available – but it all started with the good old PC. In this tutorial, you’ll learn how to develop a photo gallery that recognises singular mouse gestures.

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In the first part of this series, I introduced a class to handle single mouse stroke detection: MGesture. This tutorial takes it a step further, by detecting a sequence of strokes.

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