'GUI_DOWNLOAD' 下载DAT格式添加列标题

REPORT  z_barry_test.

DATA: BEGIN OF itab OCCURS 0 ,
      f1 TYPE i,
      f2(10) TYPE c,
       END OF itab.
DATA:BEGIN OF itab_title OCCURS 0 ,
       f1(20) TYPE c,
  END OF itab_title.

itab-f1 = 2.
itab-f2 = 'ABC'.
APPEND itab.

itab_title-f1 = '列1'.
APPEND itab_title.
itab_title-f1 = '列是大法师东方'.
APPEND itab_title.

CALL FUNCTION 'GUI_DOWNLOAD'
  EXPORTING
    filename   = 'C:\ttt.txt'
    filetype   = 'DAT'
  TABLES
    data_tab   = itab
    fieldnames = itab_title.