Now that .NET Framework 4.0 Beta 2 is out let’s look again what is available for building multi-touch application in WPF. In Beta 1 we got only a preview of manipulation and inertia components. With Beta 2 we finally get access to whole touch input system, and it looks very close to what was shown on PDC last year. Here is an overview from MSDN: Elements in WPF now accept touch input. The UIElement, and UIElement3D, and ContentElement classes expose events that occur when a user touches an element ......