ALV: how to disable editable cell and F4 in certain rows only.

Question

I am building a table maintenance front-end with an ALV grid using OOP concept.  Certain fields are editable and also have customised search helps assigned to them in the ALV structure defined for the grid. What I want is where I have identified an entry in my database table as being locked by another user, I want to grey the line out on the ALV grid so that the entry cannot be edited and not have f4 input whilst this entry is locked by another user.
I can grey the line out or disable F4 but not both at the same time.  If I disable the cells of the row concerned using MC_STYLE_DISABLED, the F4 is still active and will change the contents of the cell concerned via the data_changed event method in CL_GUI_ALV_GRID.
I have used MC_STYLE_DISABLED where I have declared  a layout in my table similiar to this:
DATA: BEGIN OF OUTPUT OCCURS 0,
FIELD1,
FIELD2,
STYLE TYPE LVC_T_STYL,
LOCK TYPE C.
END OF OUTPUT.
DATA: ls_celltab TYPE lvc_s_styl.
* Where lock identified, field LOCK set to 'X'.
LOOP AT OUTPUT where lock = 'X'.
ls_celltab-fieldname = 'FIELD1'.
ls_celltab-style = cl_gui_alv_grid=>mc_style_disabled.
APPEND ls_celltab TO OUTPUT-STYLE.
ls_celltab-fieldname = 'FIELD2'.
ls_celltab-style = cl_gui_alv_grid=>mc_style_disabled.
APPEND ls_celltab TO OUTPUT-STYLE.
ENDIF.
append OUTPUT.
I have tried adding MC_STYLE_F4_NO to field LS_CELLTAB-STYLE2 but this does not do both actions atthe same time.
Can anyone suggest what I might be doing wrong or an alternative way around this?
Many thanks
Regards
Larissa

Answer 1

As I have explained, I have fields that are editable AND are F4 enabled.  What I want is for certain rows of the ALV that I do not want any procesing to occur to make all fields in that row not available for input AND not f4 enabled.  I read a lock using a lock object.  If the entry in my ALV matches the key locked in the lock object, I want that line to be in display mode only in the ALV with no F4 help being able to be called.  It happens on the grid frontend when I press enter and have checked if any of my entries in my ALV are already locked by another user. The code is too long to post here. I can disbale the editable fields using MC_STYLE_DISABLED as described above but then the little drop down to enable F4 input is still visible against the field. 
I have got round it by calling the f4 in event HANDLE_ON_F4 to not go via the search help and set er_event_data->m_event_handled = c_yes so that the F4 hit list does not appear, but I want to get rid of the drop down marker in that field in that instance.
Hope this is a little clearer now.
Larissa