In my last post, I introduced TouchToolkit – a toolkit for developing touch-enabled applications. This is the first of a multi-part post where I will explain how TouchToolkit can help simplify the development process of multi-touch applications in Silverlight or WPF 4.0. While we can use the recorded touch interactions (I will explain the recorder module in another post), its better to have a touch-enabled device (e.g. Dell XT2) or an emulator (e.g. MultiTouchVista) to test the application. First,...