Patent ID: 8578298

Claim:
A display control apparatus comprising: an input unit configured to designate a position on a display screen; a display control unit configured to control to identifiably display a set region set on the display screen; and a control unit configured to control to, when a trajectory of the designated position after a start of designating the position by said input unit does not satisfy a predetermined condition while the set region is set on the display screen, change a portion occupied by the set region on the display screen in accordance with the trajectory, and when the trajectory satisfies the predetermined condition, set a new set region different from the set region on the display screen in accordance with the trajectory, wherein the change includes at least one of movement of a specific side of the set region, movement of the set region, rotation of the set region, enlargement of the set region, and reduction of the set region, and wherein the predetermined condition is that a component of the trajectory that is parallel to the specific side moved by the change becomes larger than a component perpendicular to the specific side.