Computer system having digitizing tablet

摘要

When a pressure sensitive tablet is tapped with a touch pen, input coordinate values x and y, corresponding to the position tapped with the pen, are sent to a tablet driver from a tablet controller. Event data is added to the coordinate values x and y sent to the tablet driver by a pointing management portion to be sent to an operating system. If the coordinate values x and y sent from the tablet driver are included in an area showing a switch of a mode displayed on a screen, the coordinate values x and y are sent to a tablet mode switching tool by a pen service portion of the operating system.