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[代码]LVC ALV最多能显示多少列

石头 11月 7, 2017 ALV 12,364 views 0

REUSE_ALV_GRID_DISPLAY_LVC创建的alv能显示很多，很多列，不止255列，具体最多多少列也不太清楚，写了个小程序，如下：

REPORT ztest_alv_max_columns.

DATA:lr_ref TYPE REF TO data.
DATA:cn(6) TYPE n.
DATA:fcat TYPE lvc_t_fcat,
     ls_f LIKE LINE OF fcat.
FIELD-SYMBOLS:<fs_tab> TYPE table.

DO 9800 TIMES.
  cn = sy-index.
  CONCATENATE 'C' cn INTO ls_f-fieldname.
  ls_f-datatype = 'CHAR'.
  ls_f-reptext = cn.
  ls_f-intlen = ls_f-outputlen = '15'.
  APPEND ls_f TO fcat.
ENDDO.
CALL METHOD cl_alv_table_create=>create_dynamic_table
  EXPORTING
    it_fieldcatalog = fcat
  IMPORTING
    ep_table        = lr_ref.
ASSIGN lr_ref->* TO <fs_tab>.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
  EXPORTING
    i_callback_program = sy-repid
    it_fieldcat_lvc    = fcat
  TABLES
    t_outtab           = <fs_tab>.