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Use
A SAP Container is a control that accommodates other controls, such as the SAP Tree Control, SAP Picture Control, SAP Textedit Control, SAP Splitter Control, and so on. It manages these controls logically in a collection, and provides a physical area in which they are displayed.
All controls live in a container. Since containers are themselves controls, you can nest them. The container is the parent of the control within it.
There are five kinds of SAP Containers:
All SAP Containers have a common parent with the type CL_GUI_CONTROL. They are all derived from this basic container, and therefore all have the same object-oriented interface.