A user interface includes elements whose appearance dynamically changes in dependence upon functions associated with the elements. In the case of an icon that is the destination for a drag-and-drop operation, the image displayed for the icon changes in accordance with the object being dragged to it, to represent the task that will be performed as a result of the drag-and-drop operation. The appearance of other elements involved in drag-and-drop operations can also be varied, to reflect the task at hand. As a result, the user is provided with more intuitive feedback regarding the functions that will be performed by the computer as a result of a drag-and-drop operation.