Pro WPF in C# 2010: Windows Presentation Foundation in .NET 4

5.6. Multitouch Input

Multitouch is a way of interacting with an application by touching a screen. What distinguishes multitouch input from more traditional pen-based input is that multitouch allows the user to work with several fingers at once. At its most sophisticated, multitouch recognizes gestures—specific ways the user can move more than one finger to perform a common operation. For example, placing two fingers on the touchscreen and moving them together is generally accepted to mean "zoom in," while pivoting one finger around another means "rotate." And because the user makes these gestures directly on the application window, each gesture is naturally connected to a specific object. For example, a simple multitouch-enabled application ...