Regarding ALV Custom F4 help

[sreeramkumar_madisetty]

Hi

I want to create custom F4 help on one of fields of ALV List.

Can you please let me know the procedure if possible with sample code.

Your co-operation will be highly appreciable.

Regards,

Kumar

[dani_mn]

HI,

check the example program below in se38.

<b>BCALV_GRID_F4_HELP</b>

[jayanthi_jayaraman]

Hi,

I got it from SDN.Check this.

Global data definitions for ALV.......................................

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.

ok_code declaration...................................................

DATA : ok_code TYPE sy-ucomm.

Tables declaration....................................................

TABLES : zaemp.

Types declaration.....................................................

TYPES : BEGIN OF ty_emp,

code LIKE zaemp-code,

designation LIKE zaemp-designation,

END OF ty_emp.

Internal table declaration............................................

DATA : i_emp TYPE TABLE OF ty_emp.

Workarea declaration..................................................

DATA : wa_emp TYPE ty_emp.

Selection screen parameters...........................................

SELECT-OPTIONS : s_code FOR zaemp-code.

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• CLASS lcl_event_handler DEFINITION

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• ........ *

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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.

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• CLASS lcl_event_handler IMPLEMENTATION

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• ........ *

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CLASS lcl_event_handler IMPLEMENTATION.

METHOD handle_on_f1.

custom f1 help for code field.......................................

IF e_fieldname = 'code'.

CALL SCREEN 3001.

ENDIF.

to prevent processing of standard f1 help............................

er_event_data->m_event_handled = 'X'.

ENDMETHOD.

Method handle_on_f4.

standard f4 help will be invoked......................................

endmethod.

ENDCLASS.

start of selection....................................................

START-OF-SELECTION.

SELECT code designation FROM zaemp

INTO CORRESPONDING FIELDS OF TABLE i_emp

WHERE code IN s_code.

CALL SCREEN 3000.

&----

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*& Module STATUS_3000 OUTPUT

&----

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• text

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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 = 'code'.

ls_fcat-ref_table = 'zaemp'.

ls_fcat-coltext = 'EMPLOYEE ID'.

APPEND ls_fcat TO i_fieldcatalog.

CLEAR ls_fcat.

ls_fcat-fieldname = 'designation'.

ls_fcat-ref_table = 'zaemp'.

ls_fcat-coltext = 'EMPLOYEE NAME'.

APPEND ls_fcat TO i_fieldcatalog.

ENDFORM.

&----

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*& Module USER_COMMAND_3000 INPUT

&----

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• text

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MODULE user_command_3000 INPUT.

CASE ok_code.

WHEN 'BACK'.

LEAVE TO SCREEN 0.

WHEN 'EXIT'.

LEAVE PROGRAM.

ENDCASE.

ENDMODULE. " USER_COMMAND_3000 INPUT

&----

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*& Module USER_COMMAND_3001 INPUT

&----

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• text

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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

&----

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*& Module STATUS_3001 OUTPUT

&----

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• text

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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 = 'designation'.

lt_f4-register = 'X'.

lt_f4-getbefore = 'X'.

lt_f4-chngeafter = 'X'.

APPEND lt_f4.

ENDFORM.

[Former Member]

hv a look at report progrm -

BCALV_TEST_GRID_F4_HELP

[sourabhshah]

hi,

BCALV_GRID_F4_HELP

• Purpose:

• ~~~~~~~~

• This report illustrates the use of f4-Help in an alv grid control.

*----

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• Background:

• ~~~~~~~~~~~

• There a two possibilities to implement an f4-Help in the alv grid

• control: one can either use standard f4-help or write one by Hand.

• For the former there is nothing to do at all. This report shows how

• to implement user-defined f4-help.

*----

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• The user should look at the definition of classes grid_application

• and lcl_event_receiver:

• all the grid-specific things happen there, while the rest

• of the program is concerned with dynpro programming

*----

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• To check program behavior

• ~~~~~~~~~~~~~~~~~~~~~~~~~

• For each choice it is explained in detail which functionality the

• f4-help dispalys. Just try out different modes at the start-dynpro.

• We also included a message signaling when datatable update actually

• occurs.

*----

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• Essential steps (search for '§')

• ~~~~~~~~~~~~~~~

• First you must define and set an event handler for event onf4

• of class cl_gui_alv_grid, just as with any event in the object

• model. In our case, its method on_f4 of (the local) class

• lcl_event_receiver (definition see below).

• We set the handler in PBO-module create_object of dynpro 100.

*

• For the easiest case where you don't want to make changes do step

• 1. Register all columns for which you want to define an f4-help.

• 1a.You can deregister columns during run-time to use standard f4-help.

• 1b.Or register additional columns during run-time.

• 2. Implement your event handler method.

• 3. Set attribute m_event_handled of er_event_data to avoid standard

• f4-help.

• If you want to allow the user to change data via f4-help you have to

• 4. set in the fieldcatalog the corresponding column editable (see

• Documentation). It does not suffice to set the complete grid

• editable.

• 5. Declare data and field-symbols for values to be changed.

• 6. Assign the values for the corresponding cells you want to edit:

• you can edit any cells. Do not refresh your table!

• 7. If your f4-help relates to other values of your table, you must

• set parameters getbefore and/or chngeafter during registration.

• 8. In case the column you want to define an f4-help has no standard

• f4-help defined, you must set parameter F4AVAILABL in the field

• catalog.

• 9. If you want to check the data yourself, you can register for the

• events data_changed and/or data_changed_finished. For the former

• you can check where the event was raised and act accordingly.

*10. Often one uses drop down boxes instead of f4-help. To do so, you

• first have to extend your datatable by one field and set the

• fieldcatalog parameter drdn_field accordingly.

*11. Then you have to prepare a drop down table, give it to your grid

• and fill in the additional field of your datatable appropritately.

*!! If you define a drop down box for a column, you can not define an

• f4-help for the same column.

[Former Member]

hI SREE RAM,

CHECK OUT THIS EXAMPLE CODING.

Program name:BCALV_GRID_EDIT_DELTA

[sreeramkumar_madisetty]

Hi

It's Answered.