Disclosed herein is a display apparatus including an input/output section for displaying an image as well as detecting a light beam representing an input received from an external source and is capable of handling inputs received from the external source as inputs destined for a plurality of points on a display screen. The apparatus further includes a target generation section configured to generate information on a target located on the display screen to represent a series of inputs received from the external source on the basis of a timewise or spatial relation between input portions located on the display screen as portions receiving inputs from the external source. The apparatus still further includes an event generation section configured to recognize an event representing a change of a state of the target on the basis of the information on the target and generate information on the event.