F4 help in ALV list

Question

Hi.
I have a problem with f4 help in alv list.
There is a field in my alv list which have a domain. This domain has its own values in value range.
I have found how to show f4 help according to system tables ( for example kunnr in kna1 ) but I need to show this value range values as f4 help in my alv list.
Please help me.
Thanks.

Answer 1

hi
try this example
REPORT zoo_alvf4 .
DATA : alvgrid TYPE REF TO cl_gui_alv_grid,
custom_container TYPE REF TO cl_gui_custom_container,
fieldcatalog TYPE lvc_t_fcat.
table to contain fields that require f4...............................
DATA : lt_f4 TYPE lvc_t_f4 WITH HEADER LINE.
DATA : ok_code TYPE sy-ucomm.
TABLES : zemployee_c7.
TYPES : BEGIN OF ty_emp,
empid LIKE zemployee_c7-empid,
empname LIKE zemployee_c7-empname,
END OF ty_emp.
DATA : i_emp TYPE TABLE OF ty_emp.
DATA : wa_emp TYPE ty_emp.
SELECT-OPTIONS : s_empid FOR zemployee_c7-empid.
CLASS lcl_event_handler DEFINITION.
PUBLIC SECTION.
METHODS :
handle_on_f1 FOR EVENT onf1 OF cl_gui_alv_grid
IMPORTING e_fieldname es_row_no er_event_data,
handle_on_f4 for event onf4 of cl_gui_alv_grid
importing e_fieldname es_row_no er_event_data
ENDCLASS.
CLASS lcl_event_handler IMPLEMENTATION.
METHOD handle_on_f1.
IF e_fieldname = 'EMPID'.
CALL SCREEN 3001.
ENDIF.
to prevent processing of standard f1 help............................
er_event_data->m_event_handled = 'X'.
ENDMETHOD.
Method handle_on_f4.
endmethod.
ENDCLASS.
start of selection....................................................
START-OF-SELECTION.
SELECT empid empname FROM zemployee_c7
INTO CORRESPONDING FIELDS OF TABLE i_emp
WHERE empid IN s_empid.
CALL SCREEN 3000.
MODULE status_3000 OUTPUT.
SET PF-STATUS 'ZTOOL'.
SET TITLEBAR 'ZTITLE'.
IF alvgrid IS INITIAL.
CREATE OBJECT custom_container
EXPORTING
container_name = 'ZCONTAINER'.
CREATE OBJECT alvgrid
EXPORTING
i_parent = custom_container.
PERFORM prepare_f4.
CALL METHOD alvgrid->register_f4_for_fields
EXPORTING
it_f4 = lt_f4[]
creating instance for event handler..................................
DATA : event_handler TYPE REF TO lcl_event_handler.
CREATE OBJECT event_handler.
SET HANDLER event_handler->handle_on_f1 FOR alvgrid.
SET HANDLER event_handler->handle_on_f4 FOR alvgrid.
preparing field catalog..............................................
PERFORM prepare_fieldcatalog CHANGING fieldcatalog.
CALL METHOD alvgrid->set_table_for_first_display
EXPORTING
I_BYPASSING_BUFFER =
I_BUFFER_ACTIVE =
I_CONSISTENCY_CHECK =
I_STRUCTURE_NAME =
IS_VARIANT =
I_SAVE =
I_DEFAULT = 'X'
IS_LAYOUT =
IS_PRINT =
IT_SPECIAL_GROUPS =
IT_TOOLBAR_EXCLUDING =
IT_HYPERLINK =
IT_ALV_GRAPHICS =
IT_EXCEPT_QINFO =
CHANGING
it_outtab = i_emp
it_fieldcatalog = fieldcatalog
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.
ENDIF.
ENDMODULE. " STATUS_3000 OUTPUT
preparing field catalog...............................................
FORM prepare_fieldcatalog CHANGING i_fieldcatalog TYPE lvc_t_fcat.
DATA : ls_fcat TYPE lvc_s_fcat.
ls_fcat-fieldname = 'EMPID'.
ls_fcat-ref_table = 'ZEMPLOYEE_C7'.
ls_fcat-coltext = 'EMPLOYEE ID'.
APPEND ls_fcat TO i_fieldcatalog.
CLEAR ls_fcat.
ls_fcat-fieldname = 'EMPNAME'.
ls_fcat-ref_table = 'ZEMPLOYEE_C7'.
ls_fcat-coltext = 'EMPLOYEE NAME'.
APPEND ls_fcat TO i_fieldcatalog.
ENDFORM.
MODULE user_command_3000 INPUT.
CASE ok_code.
WHEN 'BACK'.
LEAVE TO SCREEN 0.
WHEN 'EXIT'.
LEAVE PROGRAM.
ENDCASE.
ENDMODULE. " USER_COMMAND_3000 INPUT
MODULE user_command_3001 INPUT.
CASE ok_code.
WHEN 'SAVE'.
LEAVE TO SCREEN 0.
WHEN 'BACK'.
LEAVE TO SCREEN 0.
ENDCASE.
ENDMODULE. " USER_COMMAND_3001 INPUT
MODULE status_3001 OUTPUT.
SET PF-STATUS 'GUI'.
SET TITLEBAR 'TITLE'.
ENDMODULE. " STATUS_3001 OUTPUT
preparing fields to be registered for f4 help.........................
FORM prepare_f4.
lt_f4-fieldname = 'EMPNAME'.
lt_f4-register = 'X'.
lt_f4-getbefore = 'X'.
lt_f4-chngeafter = 'X'.
APPEND lt_f4.
ENDFORM.
Regards