Volume 6A: Motif Programming Manual

Output of getusers.c

The components in the program do not have any functionality; the program is used solely to demonstrate how panels

of arbitrary widgets can be displayed in a ScrolledWindow. The widget hierarchy is irrelevant to the operation of the

ScrolledWindow. In this particular case, the ScrolledWindow is a child of the top−level shell. We could have used a

MainWindow widget in place of a ScrolledWindow; these two components are interchangeable because the

MainWindow is subclassed from the ScrolledWindow. See Chapter 4, The Main Window, for more details on how

the MainWindow widget fits into the design of an application.

We used arbitrary values for the width and height of the ScrolledWindow; they were chosen because they seemed to

work best. If you are using a ScrolledWindow with a number of other widgets in an interface, you do not need to

specify an initial size for the ScrolledWindow. Since the ScrolledWindow is extremely flexible, you can allow its

parent or its siblings to control its size. ScrolledWindows work well with PanedWindows because they can be

adjusted easily. However, the ScrolledWindow does not have a sensible default size, so you should provide an initial

geometry if the ScrolledWindow is going to control its own size. In this case, the size that you choose for the widget

should be based on the aesthetics of the data that is being displayed.

In the example, the child ...