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Difference between SY-TABIX and SY-INDEX

In LOOP   and    ENDLOOP  with respect to internal table and workarea use SY-TABIX as tabix takes the row number  of internal table during the current loop process.

SY-Index comes into picture during   DO  and ENDDO
Index is also used incase of Read table commmand

Change Button Text Dynamically

   LOOP AT SCREEN.

    IF screen-name = 'GV_BUTTON' .

      gv_button = 'Darling ' .
      MODIFY SCREEN.
    ENDIF.

  ENDLOOP.


gv_button is the button name created in screen.
We have to check the checkbox for output in program tab in buton attributes.

Tcode for Table maintenance generator

ZTQM_GLOBAL_PARMS at end in the right bottom column is the table name which is tobe given as per table we create. Second line at last update and x should be as it is..

Parallel Cursor Method

 SORT: lt_vbpa BY kunnr,  "Sorting by key is very important
      lt_kna1 BY kunnr.  "Same key which is used for where condition is used here
LOOP AT lt_vbpa INTO wa_vbpa.
  READ lt_kna1 INTO wa_kna1     " This sets the sy-tabix
       WITH KEY kunnr = wa_vbpa-kunnr
       BINARY SEARCH.
  IF sy-subrc = 0.              "Does not enter the inner loop
    v_kna1_index = sy-tabix.
    LOOP AT lt_kna1 INTO wa_kna1 FROM v_kna1_index. "Avoiding Where clause
      IF wa_kna1-kunnr <> wa_vbpa-kunnr.  "This checks whether to exit out of loop
        EXIT.
      ENDIF.

****** Your Actual logic within inner loop ******

    ENDLOOP.                                                "KNA1 Loop
  ENDIF.
ENDLOOP.  " VBPA Loop 

Removing buttons in Oops Editable ALV

below is the code to remove all buttons except  plus +  and - minus push buttons.


   lw_exclude = cl_gui_alv_grid=>mc_fc_maximum .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_minimum .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_subtot .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_sum .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_average .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_mb_sum .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_mb_subtot .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_sort_asc.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_sort_dsc .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_print .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_views.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_pc_file .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_graph .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_copy .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_cut .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_undo .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_refresh .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_check .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_detail .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_filter .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_append_row .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_copy .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_copy_row.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_cut .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_find.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_help .
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_paste.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_mb_export.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_loc_paste_new_row.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_load_variant.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_save_variant.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_current_variant.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_maintain_variant.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_mb_variant.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_html.
  APPEND lw_exclude TO gt_exclude.
  lw_exclude = cl_gui_alv_grid=>mc_fc_info.
  APPEND lw_exclude TO gt_exclude.


At last pass this Gt_exclude to the method as below.

  CALL METHOD gcl_cl_gui_alv_grid->set_table_for_first_display
  EXPORTING
*    I_BUFFER_ACTIVE               =
*    I_BYPASSING_BUFFER            =
*    I_CONSISTENCY_CHECK           =
*    I_STRUCTURE_NAME              =
*    IS_VARIANT                    =
*    I_SAVE                        =
        i_default                     = 'X'
*    IS_LAYOUT                     =
*    IS_PRINT                      =
*    IT_SPECIAL_GROUPS             =
        it_toolbar_excluding          = gt_exclude*    IT_HYPERLINK                  =
*    IT_ALV_GRAPHICS               =
*    IT_EXCEPT_QINFO               =
      CHANGING
        it_outtab                     = gt_conid
        it_fieldcatalog               = gt_fieldcat
*    IT_SORT                       =
*    IT_FILTER                     =
*  EXCEPTIONS
*    INVALID_PARAMETER_COMBINATION = 1
*    PROGRAM_ERROR                 = 2
*    TOO_MANY_LINES                = 3
*    others                        = 4
            .
    IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.

Module Pool : To make few fields in a screen to INVISIBLE

Group a number of fields ( whether it is input or output  doesn't matter ) , give a group name to it.
Check the below example using group name.


Below is the example



  LOOP AT SCREEN.
    IF screen-group1 = '001'.
      screen-invisible = '1'.
      screen-input = '0'.
      screen-output = '0'.
      screen-active = '0'.
      MODIFY SCREEN.
    ENDIF.
   IF screen-group2 = '111'.
      screen-input = '0'.
      MODIFY SCREEN.
    ENDIF.
  ENDLOOP.