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ABAP Keyword Documentation → ABAP − Reference → User Dialogs → Selection Screens → Selection Screen Processing →Syntax
AT SELECTION-SCREEN selscreen_event.
Effect
This statement defines event blocks for different events selscreen_event that are triggered by the ABAP runtime environment during selection screen processing.
Selection screen events occur immediately before sending a selection screen and after certain user actions on a displayed selection screen. They assist in selection screen processing in the ABAP program.
AT SELECTION-SCREEN is triggered at least twice for actions on selection screens included as a
subscreen on another selection
screen: First for the included selection screen and then the for selection screen or screens to be included.
Note
The event blocks after AT SELECTION-SCREEN are implemented internally as
procedures. Declarative statements in these event blocks create local data.
Example
The program DEMO_SELECTION_SCREEN_EVENTS demonstrates all selection results.