1. An apparatus for managing the layout of a window, the apparatus comprising: a display unit that displays the window and a plurality of display areas; a pointer-position-checking unit that checks a coordinate position of a pointer moved by a user, and determines one of the display areas corresponding to the position of the checked pointer; and a window-size-adjusting unit that moves the window to the one display area where the pointer is positioned and adjusts the size of the window in proportion to the size of the one display area.