A method, including displaying, by an electronic device, a window preview region in a first region of a display having the first region, a second region and a third region, where the first, second and third regions do not overlap, and the second and third region are larger than the first region, displaying a first user interface in the third region, displaying a second user interface in the second region, detecting a first operation and displaying a first window of the first user interface in the window preview region, detecting a second operation and displaying a third user interface of the first application in the third region, detecting a fourth operation associated with displaying the first user interface in at least one of the second region or the third region, and switching, in response to the fourth operation, the second or third user interface to the first user interface.