A method for controlling an interface in an electronic device includes a touch-sensitive display. A first predefined user action is detected, together with a second user action, and the electronic device defines and positions a cursor on the display screen. A first display area which contains soft buttons from a certain part of the display screen (depending on cursor position) is projected within or around the portion of the display within reach of a user's thumb, for one-handed operation. The soft buttons in such first display area can be shrunk or enlarged in size as user requires.