F4 help Dynamic Internal table displayed CL_GUI_ALV_GRID

[Former Member]

HI Experts,

         I have a requirement of displaying a Dynamic internal Table in CL_GUI_ALV_GRID_DISPLAY,

     Its Done , BUT I want F4 HELP  for some fields which are displayed  in the ALV  . How can i do that ?

               Thanks in advance.

Regards,

Srikanth.

[Former Member]

Hi Srikanth,

       If you are using Fieldcat then you can do as following provided that the search help is attached in field level or data element level.

                  wa_fcat-F4AVAILABL = 'X'.

Regards,

Junas Pious.

[Former Member]

Hi Junas,

     Thanks for replying. But here i want F4 help also Dynamically ie.. taking the value in the first field

I want the F4 HELP for second field, and taking the value in the second field i should populate the third field F4 HELP, and so on..

Regards,

Srikanth.

[Former Member]

Hi Srikanth,

You need to consider event ONF4 of class CL_GUI_ALV_GRID : this way you can have have a dynamic value-request where you could take particular values into account.

Regards,

William

[SimoneMilesi]

I did not understand this, sorry 😐

[Ashg1402]

Hi,

There is an event 'ONF4' in cl_gui_alv_grid class.

Use this event, write your code to handle the event.

Search the other posts for code implementation  for the event. I believe this will solve your issue.

[Sandra_Rossi]

Your requirement seems weird, so I guess I didn't understand what you said. Can you explain again please, with a little scheme if possible?

[Former Member]

HI,

   I should display a dynamic internal table in ALV. This was done.

now i want F4 Help for 2nd and 3rd fields .

For this :

if the first field is kunnr, i want F4 help for the second field ( eg: sales order ) in the F4 help of second field i want only the corresponding records ( sales in this eg ) . likewise third field F4 help depends on 2nd field input.

Here filling the table LVC_T_F4 is the problem for me. What should assigned to the field 'FIELDNAME'.  I have hard coded the second field name and tried, and also tried to assign the component. but nothing is working.

[raymond_giuseppi]

Is your internal table actually dynamic, in this case use ONF4 (*) to manage the F4.

Regards,

Raymond

(*) as already suggested by William.

[Ashg1402]

In the table for LVC_T_F4 create multiple records for all those fields which you want to assign help for.

We get the ROW_NO as a parameter for the event. Read your internal table with that index.

Good thing is that we have the field names .

Just take the value of those fields, and do a query or whatever you want to do to get the data based on that field value.

[Sandra_Rossi]

Thanks. So, let's say your 2 columns are named KUNNR, VBELN. In the internal table of type LVC_T_F4, you must add one line with FIELDNAME = 'KUNNR', and one line with FIELDNAME = 'VBELN'. For this you set a Handler on event ONF4 (+ parameter E_FIELDNAME to know on which field KUNNR or VBELN F4 is pressed) + call method REGISTER_F4_FOR_FIELDS with the itab of type LVC_T_F4.

EDIT: Refer to demo program BCALV_TEST_GRID_F4_HELP for real code example.

[Former Member]

Hi,

        I have tried this. but not working

             field = 'FIELD'.
            ASSIGN COMPONENT field OF STRUCTURE workarea TO <fs_vall>.
               IF lit_f4[] IS INITIAL.
                 CLEAR wa_f4.
                 wa_f4-fieldname = <fs_vall>.
                 wa_f4-register = 'X'.
                 wa_f4-chngeafter  = 'X'.
                 APPEND lwa_f4 TO lit_f4.

(   ASSIGN COMPONENT  2 OF STRUCTURE workarea TO <fs_vall>. also tried this )

[Ashg1402]

Did you put this statement  - er_event_data->m_event_handled = 'X'. After filling the table lit_f4.

I am also having a doubt that what value will the field-symbol <fs_val1> will get. Did you check the value in debugging.?

[SimoneMilesi]

How do you build your table? And your fieldcat?

[Former Member]

Hi,

             I have a DB table with table names and field names, i have fetched the records and using that data  i have filed the  FIELDCAT through which i created the Dynamic table

[former_member241258]

hi , see below sample report for ur idea REPORT ZDEMO2. DATA:GO_CON TYPE REF TO CL_GUI_CUSTOM_CONTAINER,     GO_ALV TYPE REF TO CL_GUI_ALV_GRID. DATA:LT_VBAK TYPE STANDARD TABLE OF VBAK. DATA:LT_FCAT TYPE LVC_T_FCAT,     LS_FCAT TYPE LVC_S_FCAT. DATA:LT_F4 TYPE LVC_T_F4,     LS_F4 TYPE LVC_S_F4. CLASS LCL_F4HAND DEFINITION.   PUBLIC SECTION.   METHODS:HAND_F4 FOR EVENT ONF4 OF CL_GUI_ALV_GRID                         IMPORTING E_FIELDNAME                                   E_FIELDVALUE                                   ES_ROW_NO                                   ER_EVENT_DATA                                   ET_BAD_CELLS                                   E_DISPLAY. ENDCLASS. CLASS LCL_F4HAND IMPLEMENTATION.   METHOD HAND_F4.     *    write here u own f4 help code.     IF 1 = 3.           ENDIF.   ENDMETHOD. ENDCLASS. DATA:LO_F4 TYPE REF TO LCL_F4HAND. START-OF-SELECTION. CREATE OBJECT GO_CON   EXPORTING     CONTAINER_NAME              = 'CON'   EXCEPTIONS     CNTL_ERROR                  = 1     CNTL_SYSTEM_ERROR          = 2     CREATE_ERROR                = 3     LIFETIME_ERROR              = 4     LIFETIME_DYNPRO_DYNPRO_LINK = 5     OTHERS                      = 6. CREATE OBJECT GO_ALV   EXPORTING     I_PARENT          = GO_CON   EXCEPTIONS     ERROR_CNTL_CREATE = 1     ERROR_CNTL_INIT  = 2     ERROR_CNTL_LINK  = 3     ERROR_DP_CREATE  = 4     OTHERS            = 5. CREATE OBJECT LO_F4. SET HANDLER LO_F4->HAND_F4 FOR GO_ALV. CLEAR LS_F4. LS_F4-FIELDNAME = 'VBELN'. LS_F4-REGISTER = 'X'. APPEND LS_F4 TO LT_F4. CALL METHOD GO_ALV->REGISTER_F4_FOR_FIELDS   EXPORTING     IT_F4  = LT_F4. SELECT * FROM VBAK INTO TABLE LT_VBAK WHERE KUNNR = '0000020028'. CLEAR LS_FCAT. LS_FCAT-FIELDNAME = 'VBELN'. LS_FCAT-SCRTEXT_L = 'Sales Order'. LS_FCAT-F4AVAILABL = 'X'. LS_FCAT-EDIT = 'X'. APPEND LS_FCAT TO LT_FCAT. CALL METHOD GO_ALV->SET_TABLE_FOR_FIRST_DISPLAY   CHANGING     IT_OUTTAB                    = LT_VBAK     IT_FIELDCATALOG              = LT_FCAT   EXCEPTIONS     INVALID_PARAMETER_COMBINATION = 1     PROGRAM_ERROR                = 2     TOO_MANY_LINES                = 3     OTHERS                        = 4. CALL SCREEN 100.

[former_member241258]

REPORT ZDEMO2. DATA:GO_CON TYPE REF TO CL_GUI_CUSTOM_CONTAINER,     GO_ALV TYPE REF TO CL_GUI_ALV_GRID. DATA:LT_VBAK TYPE STANDARD TABLE OF VBAK. DATA:LT_FCAT TYPE LVC_T_FCAT,     LS_FCAT TYPE LVC_S_FCAT. DATA:LT_F4 TYPE LVC_T_F4,     LS_F4 TYPE LVC_S_F4. CLASS LCL_F4HAND DEFINITION.   PUBLIC SECTION.   METHODS:HAND_F4 FOR EVENT ONF4 OF CL_GUI_ALV_GRID                         IMPORTING E_FIELDNAME                                   E_FIELDVALUE                                   ES_ROW_NO                                   ER_EVENT_DATA                                   ET_BAD_CELLS                                   E_DISPLAY. ENDCLASS. CLASS LCL_F4HAND IMPLEMENTATION.   METHOD HAND_F4.     IF 1 = 3.     ENDIF.   ENDMETHOD. ENDCLASS. DATA:LO_F4 TYPE REF TO LCL_F4HAND. START-OF-SELECTION. CREATE OBJECT GO_CON   EXPORTING     CONTAINER_NAME              = 'CON'   EXCEPTIONS     CNTL_ERROR                  = 1     CNTL_SYSTEM_ERROR          = 2     CREATE_ERROR                = 3     LIFETIME_ERROR              = 4     LIFETIME_DYNPRO_DYNPRO_LINK = 5     OTHERS                      = 6. CREATE OBJECT GO_ALV   EXPORTING     I_PARENT          = GO_CON   EXCEPTIONS     ERROR_CNTL_CREATE = 1     ERROR_CNTL_INIT  = 2     ERROR_CNTL_LINK  = 3     ERROR_DP_CREATE  = 4     OTHERS            = 5. CREATE OBJECT LO_F4. SET HANDLER LO_F4->HAND_F4 FOR GO_ALV. CLEAR LS_F4. LS_F4-FIELDNAME = 'VBELN'. LS_F4-REGISTER = 'X'. APPEND LS_F4 TO LT_F4. CALL METHOD GO_ALV->REGISTER_F4_FOR_FIELDS   EXPORTING     IT_F4  = LT_F4. SELECT * FROM VBAK INTO TABLE LT_VBAK WHERE KUNNR = '0000020028'. CLEAR LS_FCAT. LS_FCAT-FIELDNAME = 'VBELN'. LS_FCAT-SCRTEXT_L = 'Sales Order'. LS_FCAT-F4AVAILABL = 'X'. LS_FCAT-EDIT = 'X'. APPEND LS_FCAT TO LT_FCAT. CALL METHOD GO_ALV->SET_TABLE_FOR_FIRST_DISPLAY   CHANGING     IT_OUTTAB                    = LT_VBAK     IT_FIELDCATALOG              = LT_FCAT   EXCEPTIONS     INVALID_PARAMETER_COMBINATION = 1     PROGRAM_ERROR                = 2     TOO_MANY_LINES                = 3     OTHERS                        = 4. CALL SCREEN 100.