| Spread WPF Documentation > Developer's Guide > Using Touch Support with the Component > Understanding Touch Support > Understanding Touch Messages |
Touch messages are processed in cell areas (Tap, Panning, Pinch, and so on); however, in header and footer areas (column header, row header, corner, and column footer) and the scroll bar area, touch messages are treated as mouse messages.
For example, a panning operation on the column header becomes a column selection action (similar to using the mouse). GcSpreadSheet does not scroll.
GcSpreadSheet provides an InputDeviceType property that returns the message's device type.