The three different APIs for using Touch in Windows* Desktop are: WM_GESTURE, WM_TOUCH, and WM_POINTER. They are all different, each with its own advantages and disadvantages.
by Erica J Mceachern and Manuj R Sabharwal
Cars, Boats and Planes: Optimizing Sonic & All-Stars Racing Transformed for Ultrabook™ PCs with Touch and Sensors
by Brad Hill and Leigh Davies.