To insert a new row in a table control without affecting the other rows

Question

Halo experts,
I have a Table control TCTRL in a program .
The lt_tab contains two cols A and B
In change mode of the transaction Col A is in display mode and Col B is in change mode
When i press the + button to insert a new blank entry .I need a blank row with both col A and col B input enabled w/o affecting the display of above and below rows of table control
In PBO module of subscreen 101
LOOP AT lt_tab  WITH CONTROL tctrl.
MODULE tctrl_status.
endloop.
In the user command of 0101
i am writn
When 'INS'.
INSERT INITIAL LINE INTO itab.
Inside MODULE tctrl_status.
IF lt_tab IS INITIAL.
    LOOP AT SCREEN.
      IF screen-name = 'COLA'.
      screen-input = 1.
  ENDIF.
    ENDLOOP.
      MODIFY SCREEN.
endif.
but the problem here is still the Col A is in display mode and Col B is in change mode after output
.Here modify statement is happening but it does not update the TCTRL-COLS-Screen structure for the col A ( which I have set statically while designing the screen ).I dont want to make the entire row in edit mode only the inserted row ( for both Col A and Col B) and the rest shud remain as it is
Thanks
Kallu

Answer 1

hi Naveen
I have made my tctrl input disabled for both the columsn and
I have a module before the PBO loop where I set the like
module set_tctrl_status.
IF gv_ok_code NE gc_disp.
    LOOP AT tctrl-cols INTO gs_cols.
      IF gs_cols-screen-name = 'ColB'.
        gs_cols-screen-input = 1.
        MODIFY tctrl-cols FROM gs_cols INDEX sy-tabix.
      ENDIF.
    ENDLOOP.
This is just to set the Col B in edit mode when in change and create status.
But if i press the INS button for that change i am coding inside the loop endloop of the pBO like
if itab is initial.
LOOP AT tctrl-cols INTO gs_cols.
gs_cols-screen-input = 1.
MODIFY tctrl-cols FROM gs_cols INDEX sy-tabix.
endloop.
But the problems i it is setting the enite rows as input enabled . I want tos et only that row inpur enabled