Anson Tsao's Blog

On programming, user interfaces and data visualizations

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  • Blog Post: Custom Touch Devices

    WPF4 allows applications to implement custom touch devices. We added this functionality to allow Surface SDK to be built on WPF multi-touch APIs directly. As we announced at PDC09, the next version of the Surface SDK will implement WPF multi-touch devices with the input from the Surface vision system...
  • Blog Post: Pictionaire: Multi-touch table that integrates physical and digital objects from Microsoft Research

    Another interesting MSR multi-touch project: Pictionaire This research project combines computer object recognition and Surface style multitouch interactions for collaboration. It’s based on a modified version of the Surface SDK It is really easy to add custom touch devices...
  • Blog Post: Multi-touch in WPF 4 Part 3 – Manipulation Events

    One of the most common usage of multi-touch input is for panning, zooming and rotation. With WPF4, the easiest way to implement these gestures is by using the Manipulation events on UIElements. Manipulation events also support simple inertial physics for a more fluid user experience. You may well...
  • Blog Post: Multi-touch in WPF 4 - Part 2

    Raw Touch Events Touch events are the equivalent of mouse events for multi-touch input. In WPF4, we’ve added touch events to UIElement, UIElement3D and ContentElements. Multi-touch events follow the same patterns as mouse events, with TouchDown, TouchMove and TouchUp, the Preview variants and TouchEnter...
  • Blog Post: Multi-touch in WPF 4 – Part 1

    During PDC 09, I co-presented a multi-touch session with Robert Levy from Surface.  (BTW, You have got to see the monster demo that Robert gave on the Surface unit.) We made a couple of significant announcements for WPF multi-touch developers. First, in post beta 2 builds of WPF, we will have built...
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