The Splitter layout manager divides some area of the screen horizontally or vertically. The divider bars can be repositioned by the user, so that depending on what the user is doing, he or she may give one or the other partition more screen space. How Layout Works. All widgets in FOX are organized into a widget hierarchy or widget-tree . Widgets are roughly classified as Composite widgets, and Simple widgets.
Composite widgets can have child widgets, whereas Simple widgets are the most basic type of widget.
This special widget represents the background screen on your display. Widgets below the RootWindow widgets are called Shell widgets. As a user resizes a Shell widget, layout needs to be performed to reposition each widget in that Shell so as to maintain the proper arrangement. Hence, we refer to the layout process as going top-down , i.e. proceeding from widgets higher up in the widget tree downward toward the leaves of the tree. Sometimes, however, widgets may want to change size of their own accord.