Windows in a graphical user interface are automatically repositioned and resized in response to changes in a display configuration. If a window is not capable of being fully displayed within the reconfigured display area, it is constrained to fit the available space. In determining the constraints for the window, the window is given a size which permits an integral amount of information to be displayed to the user. If a minimum required size is not already present in the available display area, the window is moved into the available area until the minimum size is attained. If the visible portion of the window already contains the minimum required area, a determination is made whether additional integral components of the window can be displayed. The window is then appropriately shrunk or expanded to permit an integral number of components to be displayed, and control elements are added to the window.