Run out of space in your GUI? Add a scrollable region to your application
When you start building apps that display long documents, large amounts of data or large numbers of widgets, it can be difficult to arrange things within a fixed-size window. Resizing the window beyond the size of the screen isn't an option, and shrinking widgets to fit can make the information unreadable.
To illustrate the problem below is a window in which we've created a large number of widgets. These widgets have the size Vertical Policy set to Preferred which automatically resizes the widgets down to fit the available space. The results are unreadable.