Abstract: A touchpanel device includes an approach determining unit configured to determine whether an object has approached to a touchscreen; an area presuming unit, if it is determined that the object has approached to the touchscreen, configured to presume an area of contact on the touchscreen; and a display controller, based on a presumed area of contact, configured to control a size of a part of graphical user interface, the part being displayed on the touchscreen.

Abstract: An information processing apparatus includes: a touch screen means formed of a panel and a touch panel, the touch screen means receiving a tracing operation defined in such a way that a user touches a predetermined area of the touch screen means with a finger and then moves the finger from the predetermined area by a predetermined distance in a predetermined direction with the finger remaining touching the predetermined area, the positional relationship among a plurality of fingers at the time of the touch and the directions of the following fingers' movements defining N tracing operations (N is an integer greater than or equal to one), each of the N tracing operations related to a single function; and a setting means for setting a function related to a predetermined one of the N tracing operations when the predetermined tracing operation is performed.