Summary

In this lesson, you learned that you use a specific class of controls - referred to as Container controls - to integrate controls on a screen. Container controls manage one or more control instances and represent the link between the control and the screen.

Depending on the control container type, you must define an area in the Screen Painter where you want to place the container. To instantiate an instance of a control, you must use method CREATE OBJECT to instantiate an object of the class of the control.

All methods that operate on a control are transferred to the frontend by means of a Remote Function Call (RFC). You use method FLUSH to determine when this is to be done. In this context, you must ensure that all actual parameters are still valid at flush time. System fields must not be passed since they often change at runtime.