Parameter as LIST BOX



Dropdown list is a user interface element which displays a list of values from which a user can select one value. Follow the below steps to create a dropdown list in SAP ABAP selection screen.
  • First build the list in the INITIALIZATION event.
  • Capture the value selected by the user from the list in the AT SELECTION-SCREEN event or keep all selected value in the INITIALIZATION event.
  • Use the selected value for further processing.



TYPE-POOLS: VRM.


 DATA: GV_PLIST TYPE VRM_ID,
        GT_PLIST TYPE VRM_VALUES,
        GS_PLIST LIKE LINE OF GT_PLIST.

PARAMETERS: P_STATUS AS LISTBOX VISIBLE LENGTH 25 OBLIGATORY.

INITIALIZATION.

*  Built Status Parameter
  GV_PLIST  = 'P_STATUS'.
  BUILT_STATUS_PARAMETER 'A' 'PO Cancelled'.
  BUILT_STATUS_PARAMETER 'B' 'Document Cancelled'.
  BUILT_STATUS_PARAMETER 'C' 'Waiting for GR'.
  BUILT_STATUS_PARAMETER 'D' 'Waiting for Invoice'.
  BUILT_STATUS_PARAMETER 'E' 'Paid'.
  BUILT_STATUS_PARAMETER 'F' 'Waiting for Payment'.
  BUILT_STATUS_PARAMETER 'G' 'Return Delivery Document'.
  CALL FUNCTION 'VRM_SET_VALUES'
    EXPORTING
      ID              = GV_PLIST
      VALUES          = GT_PLIST
    EXCEPTIONS
      ID_ILLEGAL_NAME = 1
      OTHERS          = 2.
  IF SY-SUBRC <> 0.
* Implement suitable error handling here
  ENDIF.

START-OF-SELECTION.
....................................................
END-OF-SELECTION.

 DEFINE BUILT_STATUS_PARAMETER.
    CLEAR GS_PLIST.
    GS_PLIST-KEY  = &1.
    GS_PLIST-TEXT = &2.
    APPEND GS_PLIST TO GT_PLIST.
 END-OF-DEFINITION.

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