ALV Grid data changed

Question

Hello;
i am using fm REUSE_ALV_GRID (not OO) to display an internal table. The user wants to change the data in a certain cell. I have marked this cell as editable and it works fine. I want to learn what to check in the event of data_changed. I have added this event in table ALV_EVENTS and directed to a subroutine. What parameters should i pass to the subroutine and what should i check to read the relevant line? Is it possible to control changes in more than one line?
Thx
Ali

Answer 1

<i>Is it possible to control changes in more than one line?</i>
yes.
for usage of the method, and editable grid please refer the sample code.
REPORT  ZTESTDFALV1                             .
*Data Declaration
DATA: BEGIN OF T_EKKO,
  EBELN TYPE EKPO-EBELN,
  EBELP TYPE EKPO-EBELP,
END OF T_EKKO.
DATA: BEGIN OF IT_EKKO OCCURS 0.
        INCLUDE STRUCTURE T_EKKO.
DATA: END OF IT_EKKO.
DATA: BEGIN OF IT_BACKUP OCCURS 0.
        INCLUDE STRUCTURE T_EKKO.
DATA: END OF IT_BACKUP.
*ALV data declarations
TYPE-POOLS: SLIS.                                 "ALV Declarations
DATA: FIELDCATALOG TYPE SLIS_T_FIELDCAT_ALV WITH HEADER LINE,
      GD_LAYOUT    TYPE SLIS_LAYOUT_ALV,
      GD_REPID     LIKE SY-REPID.
*Start-of-selection.
START-OF-SELECTION.
  PERFORM DATA_RETRIEVAL.
  PERFORM BUILD_FIELDCATALOG.
  PERFORM BUILD_LAYOUT.
  IT_BACKUP[] = IT_EKKO[].
  PERFORM DISPLAY_ALV_REPORT.
*&      Form  build_fieldcatalog
*       text
FORM BUILD_FIELDCATALOG.
  REFRESH FIELDCATALOG.
  CLEAR FIELDCATALOG.
  FIELDCATALOG-FIELDNAME   = 'EBELN'.
  FIELDCATALOG-SELTEXT_M   = 'Purchase Order'.
  FIELDCATALOG-INPUT     = 'X'.
  FIELDCATALOG-EDIT     = 'X'.
  FIELDCATALOG-COL_POS     = 2.
  APPEND FIELDCATALOG.
  CLEAR  FIELDCATALOG.
  FIELDCATALOG-FIELDNAME   = 'EBELP'.
  FIELDCATALOG-SELTEXT_M   = 'PO Item'.
  FIELDCATALOG-COL_POS     = 3.
  APPEND FIELDCATALOG.
  CLEAR  FIELDCATALOG.
ENDFORM.                    " BUILD_FIELDCATALOG
*&      Form  BUILD_LAYOUT
*       Build layout for ALV grid report
FORM BUILD_LAYOUT.
  "Permet d'ajuster les colonnes au text
*  gd_layout-colwidth_optimize = 'X'.
  GD_LAYOUT-TOTALS_TEXT       = 'Totals'(201).
*  gd_layout-box_fieldname = 'SELECT'.
*  gd_layout-box_tabname   = 'IT_EKKO'.
ENDFORM.                    " BUILD_LAYOUT
*&      Form  DISPLAY_ALV_REPORT
*       Display report using ALV grid
FORM DISPLAY_ALV_REPORT.
  GD_REPID = SY-REPID.
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
       EXPORTING
            I_CALLBACK_PROGRAM        = GD_REPID
*            i_callback_top_of_page   = 'TOP-OF-PAGE'
            I_CALLBACK_PF_STATUS_SET  = 'SET_PF_STATUS'
            I_CALLBACK_USER_COMMAND   = 'USER_COMMAND'
*            i_grid_title             = 'My Title'
            IS_LAYOUT                 = GD_LAYOUT
            IT_FIELDCAT               = FIELDCATALOG[]
       TABLES
            T_OUTTAB                  = IT_EKKO
       EXCEPTIONS
            PROGRAM_ERROR             = 1
            OTHERS                    = 2.
  IF SY-SUBRC <> 0.
    WRITE:/ SY-SUBRC.
  ENDIF.
ENDFORM.                    " DISPLAY_ALV_REPORT
*&      Form  DATA_RETRIEVAL
*       Retrieve data form EKPO table and populate itab it_ekko
FORM DATA_RETRIEVAL.
  SELECT EBELN EBELP
   UP TO 10 ROWS
    FROM EKPO
    INTO CORRESPONDING FIELDS OF TABLE  IT_EKKO.
ENDFORM.                    " DATA_RETRIEVAL
*                      FORM SET_PF_STATUS                              *
FORM SET_PF_STATUS USING RT_EXTAB   TYPE  SLIS_T_EXTAB.
  SET PF-STATUS 'STANDARD_FULLSCREEN1' EXCLUDING RT_EXTAB.
ENDFORM.                    "set_pf_status
*&      Form  user_command
*       text
*      -->R_UCOMM    text
*      -->RS_SELFIELDtext
FORM USER_COMMAND  USING R_UCOMM LIKE SY-UCOMM
                         RS_SELFIELD TYPE SLIS_SELFIELD.
  <b>DATA: GD_REPID LIKE SY-REPID, "Exists
  REF_GRID TYPE REF TO CL_GUI_ALV_GRID. "new
*then insert the following code in your USER_COMMAND routine...
  IF REF_GRID IS INITIAL.
    CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR'
      IMPORTING
        E_GRID = REF_GRID.
  ENDIF.
  IF NOT REF_GRID IS INITIAL.
    CALL METHOD REF_GRID->CHECK_CHANGED_DATA
  ENDIF.</b>
  CASE R_UCOMM.
    WHEN '&IC1'.
      CHECK RS_SELFIELD-TABINDEX > 0.
      IF RS_SELFIELD-VALUE EQ '6000000001'.
        CALL TRANSACTION 'ZDF2'.
      ENDIF.
    WHEN 'ENTER'.
      READ TABLE IT_EKKO INDEX  RS_SELFIELD-TABINDEX.
      IF SY-SUBRC = 0.
        READ TABLE IT_BACKUP INDEX RS_SELFIELD-TABINDEX.
        IF SY-SUBRC = 0.
          IF IT_EKKO <> IT_BACKUP.
*  then do your check
          ENDIF.
        ENDIF.
      ENDIF.
      PERFORM DATA_RETRIEVAL.
      RS_SELFIELD-REFRESH = 'X'.
  ENDCASE.
ENDFORM.                    "user_command
Regards
Vijay