15.4. Multitouch Functionality

Probably one of the most interesting features in WPF 4.0 is multitouch functionality. Multitouch allows your application to work with touch input and gestures (e.g., you can spin an image around by rotating your hand).

Multitouch support is Windows 7 only and is enabled by setting the IsManipulationEnabled property on an element to true and then handling the various events that the APIs expose. It's worth noting that multitouch functionality is compatible with Surface SDK 2.0 (the world's most expensive but cool table).

The ContentElement, UIElement, and UIElement3D elements support the following events:

  • PreviewTouchDown

  • TouchDown

  • PreviewTouchMove

  • TouchMove

  • PreviewTouchUp

  • TouchUp

  • GotTouchCapture

  • LostTouchCapture

  • TouchEnter ...

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