The APIs in WPF4 plus the Surface Toolkit for Windows Touch make building common touch scenarios easy. However, implementing many of the same touch scenarios using WPF3.5SP1 or Silverlight 3/4 involves writing a fair bit more code. Furthermore, the touch APIs across WPF4, WPF3.5SP1, and Silverlight are different.
The goal of this project is to simplify building common touch scenarios when using WPF 3.5 SP1 or Silverlight 3/4 by using Expression Blend Behaviors to provide a consistent way to implement these scenarios across WPF & Silverlight. Expression Blend Behaviors can be used within Visual Studio without a dependency on Expression Blend by downloading the Expression Blend 3 SDK. You can also find more Expression Blend Behaviors athttp://expressionblend.codeplex.com/ and http://tinyurl.com/ExpressionGalleryBehaviors.