Code: Alles auswählen.
DATA: ls_fcat LIKE lvc_s_fcat,
fcat TYPE lvc_t_fcat.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
EXPORTING
i_structure_name = 'STRUKTURNAME'
i_bypassing_buffer = 'X'
CHANGING
ct_fieldcat = fcat[].
LOOP AT fcat INTO ls_fcat.
CASE ls_fcat-fieldname.
WHEN 'NAMEDESFELDES'.
ls_fcat-col_pos = 2.
ls_fcat-outputlen = 10.
ls_fcat-key = 'X'.
MODIFY fcat FROM ls_fcat TRANSPORTING col_pos
outputlen key.
endloop.