ABAP Keyword Documentation →  ABAP − Reference →  SAP GUI User Dialogs →  Selection Screens →  Selection Screen Processing →  AT SELECTION-SCREEN →  AT SELECTION-SCREEN - selscreen_event 

Selection Screens, Block Processing and Radio Button Processing

This example demonstrates how blocks and radio buttons are processed in selection screens.

Other versions: 7.31 | 7.40 | 7.54

Source Code

REPORT demo_at_selection_on_block .

SELECTION-SCREEN BEGIN OF BLOCK part1 WITH FRAME.
PARAMETERS: number1 TYPE i,
            number2 TYPE i,
            number3 TYPE i.
SELECTION-SCREEN END OF BLOCK part1.

SELECTION-SCREEN BEGIN OF BLOCK part2 WITH FRAME.
PARAMETERS: r1 RADIOBUTTON GROUP rad DEFAULT 'X',
            r2 RADIOBUTTON GROUP rad,
            r3 RADIOBUTTON GROUP rad.
SELECTION-SCREEN END OF BLOCK part2.


AT SELECTION-SCREEN ON BLOCK part1.
  IF number3 <= number2 OR
     number2 <= number1.
    MESSAGE e888(sabapdemos) WITH text-001.
  ENDIF.

AT SELECTION-SCREEN ON RADIOBUTTON GROUP rad.
  IF r1 = 'X'.
    MESSAGE w888(sabapdemos) WITH text-002.
  ENDIF.

Description

In the event blocks AT SELECTION-SCREEN ON BLOCK and AT SELECTION-SCREEN ON RADIOBUTTON GROUP the user input is validated and error messages are displayed if applicable.

If the user does not enter any ascending numbers in a block part1, the entire block is made ready for input again.

If the user does not change the radio buttons of group rad, a warning appears.