Unlock a row in alv - make fields editable

Question

Hello,
I have to solve the following problem: I am using ALV FM and I have to display a non-writable alv. When a user selects a line and clicks a button, this line must change to editable mode. I found the example below. At first glance, it seemed to be what I had looked for. But on the second glance I figured out, that it does the opposite of what I need.
When I set "FIELDCAT-EDIT = space." and "LS_EDIT-STYLE = CL_GUI_ALV_GRID=>MC_STYLE_ENABLED." the whole table rests in locked mode. Could someone please tell me, how to lock all rows and set a single row editable?
Thanks in advance
REPORT ZTESTALV.
TYPE-POOLS: SLIS.
*- Fieldcatalog
DATA: IT_FIELDCAT  TYPE LVC_T_FCAT,
      IT_FIELDCAT1  TYPE SLIS_T_FIELDCAT_ALV.
*- For Events
DATA:IT_EVENTS TYPE SLIS_T_EVENT.
DATA:  X_FIELDCAT  TYPE LVC_S_FCAT,
        X_FIELDCAT1  TYPE SLIS_FIELDCAT_ALV.
DATA:X_LAYOUT TYPE LVC_S_LAYO.
"{ FOR DISABLE
DATA: LS_EDIT TYPE LVC_S_STYL,
      LT_EDIT TYPE LVC_T_STYL.
"} FOR DISABLE
DATA: BEGIN OF IT_VBAP OCCURS 0,
      VBELN LIKE VBAP-VBELN,
      POSNR LIKE VBAP-POSNR,
      HANDLE_STYLE TYPE LVC_T_STYL, "FOR DISABLE
     END OF IT_VBAP.
DATA: LS_OUTTAB LIKE LINE OF IT_VBAP.
SELECT VBELN
       POSNR
       UP TO 10 ROWS
      INTO CORRESPONDING FIELDS OF TABLE IT_VBAP
      FROM VBAP.
DATA:L_POS TYPE I VALUE 1.
CLEAR: L_POS.
L_POS = L_POS + 1.
X_FIELDCAT-SELTEXT = 'VBELN'.
X_FIELDCAT-FIELDNAME = 'VBELN'.
X_FIELDCAT-TABNAME = 'ITAB'.
X_FIELDCAT-COL_POS    = L_POS.
X_FIELDCAT-EDIT = 'X'.
X_FIELDCAT-OUTPUTLEN = '10'.
x_fieldcat-ref_field = 'VBELN'.
x_fieldcat-ref_table = 'VBAK'.
APPEND X_FIELDCAT TO IT_FIELDCAT.
CLEAR X_FIELDCAT.
L_POS = L_POS + 1.
X_FIELDCAT-SELTEXT = 'POSNR'.
X_FIELDCAT-FIELDNAME = 'POSNR'.
X_FIELDCAT-TABNAME = 'ITAB'.
X_FIELDCAT-COL_POS    = L_POS.
X_FIELDCAT-EDIT = 'X'.
X_FIELDCAT-OUTPUTLEN = '5'.
APPEND X_FIELDCAT TO IT_FIELDCAT.
CLEAR X_FIELDCAT.
L_POS = L_POS + 1.
<b>"{FOR DISABLE HERE 6ROW IS DISABLED
SY-TABIX = 6.
LS_EDIT-FIELDNAME = 'VBELN'.
LS_EDIT-STYLE = cl_gui_alv_grid=>MC_STYLE_DISABLED.
LS_EDIT-STYLE2 = SPACE.
LS_EDIT-STYLE3 = SPACE.
LS_EDIT-STYLE4 = SPACE.
LS_EDIT-MAXLEN = 10.
INSERT LS_EDIT INTO TABLE LT_EDIT.
LS_EDIT-FIELDNAME = 'POSNR'.
LS_EDIT-STYLE = CL_GUI_ALV_GRID=>MC_STYLE_DISABLED.
LS_EDIT-STYLE2 = SPACE.
LS_EDIT-STYLE3 = SPACE.
LS_EDIT-STYLE4 = SPACE.
LS_EDIT-MAXLEN = 6.
INSERT LS_EDIT INTO TABLE LT_EDIT.
INSERT LINES OF LT_EDIT INTO TABLE LS_OUTTAB-HANDLE_STYLE.
MODIFY IT_VBAP INDEX SY-TABIX FROM LS_OUTTAB  TRANSPORTING
                                  HANDLE_STYLE .
X_LAYOUT-STYLEFNAME = 'HANDLE_STYLE'.
"} UP TO HERE</b>
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
  EXPORTING
    I_CALLBACK_PROGRAM = SY-REPID
    IS_LAYOUT_LVC      = X_LAYOUT
    IT_FIELDCAT_LVC    = IT_FIELDCAT
  TABLES
    T_OUTTAB           = IT_VBAP[]
  EXCEPTIONS
    PROGRAM_ERROR      = 1
    OTHERS             = 2.
IF SY-SUBRC <> 0.
  MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
          WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
Message was edited by:
        Achim Beckmann

Answer 1

The problem is solved.