OO ALV

[Former Member]

Hi all,

I'm creating an OO ALV grid. I'm using

FUNCTION 'LVC_FIELDCATALOG_MERGE'

I would like to use my own structure, but it only allows me to use

one from the dictionary, otherwise my grid is pt_fieldcat is empty like my grid.

here is a small sample of my code:

********************************************

*DATA DECLARATIONS

DATA: BEGIN OF I_RESULTS OCCURS 0,

PERNR LIKE P0002-PERNR,

VORNA LIKE P0002-VORNA,

NACHN LIKE P0002-NACHN,

END OF I_RESULTS.

DATA: GR_ALVGRID TYPE REF TO CL_GUI_ALV_GRID.

DATA: GC_CUSTOM_CONTROL_NAME TYPE SCRFNAME VALUE 'CC_ALV'.

DATA: GR_CCONTAINER TYPE REF TO CL_GUI_CUSTOM_CONTAINER.

DATA: GT_FIELDCAT TYPE LVC_T_FCAT.

DATA: GS_LAYOUT TYPE LVC_S_LAYO.

********************************************

********************************************

*FORM

FORM PREPARE_FIELD_CATALOG CHANGING PT_FIELDCAT TYPE LVC_T_FCAT.

DATA LS_FCAT TYPE LVC_S_FCAT.

CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'

EXPORTING

I_STRUCTURE_NAME = 'I_RESULTS'

CHANGING

CT_FIELDCAT = PT_FIELDCAT[]

EXCEPTIONS

INCONSISTENT_INTERFACE = 1

PROGRAM_ERROR = 2

OTHERS = 3.

***************************************************

...

It only functions when I make I_STRUCTURE_NAME = pa00002

and DATA: BEGIN OF I_RESULTS OCCURS 0,

INCLUDE STRUCTURE PA0000,

END OF I_RESULTS.

otherwise I see only an empty grid on my screen. When it comes out

of that function, my PT_FIELDCAT[] is empty.

Thanks.

Warren

[Former Member]

Hi,

Check the below code....

data : wa_fcat type lvc_s_fact,

lt_fcat type lvc_t_fcat.

wa_fcat-ROW_POS = 1.

wa_fcat-COL_POS = 1.

wa_fcat-FIELDNAME = 'VBELN'.

wa_fcat-TABNAME = 'ITAB'.

wa_fcat-KEY = 'X'.

wa_fcat-outputlen = '20'

wa_fcat-SCRTEXT_M = 'Sales Document

APPEND WA_FCAT TO LT_FCAT.

clear wa_fcat.

wa_fcat-ROW_POS = 1.

wa_fcat-COL_POS = 2.

wa_fcat-FIELDNAME = 'AUART'.

wa_fcat-TABNAME = 'ITAB'.

wa_fcat-outputlen = '10'

wa_fcat-SCRTEXT_M = 'Doc Type'.

APPEND WA_FCAT TO LT_FCAT.

clear wa_fcat.

This way you can build your own field catalog. You can use all the parameters in the structure LVC_S_FCAT. Check the Structure LVC_S_FCAT for Field description.

The table LT_FCAT can later be passed to the ALV Display Method.

The function module 'LVC_FIELDCATALOG_MERGE' basically is used to copy the field catalog of the database structure.

Regards,

Vara

[Former Member]

Hi Warren,

You should pass it as Internal table parameter rather than Structure.

CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'

EXPORTING

• I_STRUCTURE_NAME = 'I_RESULTS'

<b> I_INTERNAL_TABNAME = 'I_RESULTS'</b>

Regards,

Vivek

PS: Award points if helpful

[Former Member]

hi .

my understanding is that you can use this FM only for standrad structures and not for cusrom defined structures.

Regard

Arun

[Former Member]

Hi,

Check the below code....

data : wa_fcat type lvc_s_fact,

lt_fcat type lvc_t_fcat.

wa_fcat-ROW_POS = 1.

wa_fcat-COL_POS = 1.

wa_fcat-FIELDNAME = 'VBELN'.

wa_fcat-TABNAME = 'ITAB'.

wa_fcat-KEY = 'X'.

wa_fcat-outputlen = '20'

wa_fcat-SCRTEXT_M = 'Sales Document

APPEND WA_FCAT TO LT_FCAT.

clear wa_fcat.

wa_fcat-ROW_POS = 1.

wa_fcat-COL_POS = 2.

wa_fcat-FIELDNAME = 'AUART'.

wa_fcat-TABNAME = 'ITAB'.

wa_fcat-outputlen = '10'

wa_fcat-SCRTEXT_M = 'Doc Type'.

APPEND WA_FCAT TO LT_FCAT.

clear wa_fcat.

This way you can build your own field catalog. You can use all the parameters in the structure LVC_S_FCAT. Check the Structure LVC_S_FCAT for Field description.

The table LT_FCAT can later be passed to the ALV Display Method.

The function module 'LVC_FIELDCATALOG_MERGE' basically is used to copy the field catalog of the database structure.

Regards,

Vara

[Former Member]

thanks for all your help, I just created my own dictionary structure and included that.

Thanks again

Warren

[Former Member]

Warren, curious to check, if my suggestion didn't work? I think you could have used internal table parameter rather than structure name parameter to pass the internal table name.