列级别的下拉列表框

一、参考例子：BCALV_EDIT_06
二、实现步骤：
1、设置下拉框列表值并赋给ALV。
1、Define a dropdown table and pass it to ALV.
PERFORM frm_set_drdn_table.
FORM frm_set_drdn_table.
DATA: lt_dropdown TYPE lvc_t_drop,
ls_dropdown TYPE lvc_s_drop.
ls_dropdown-handle = ‘1’.
ls_dropdown-value = ‘值1’.
APPEND ls_dropdown TO lt_dropdown.
CLEAR ls_dropdown.

ls_dropdown-handle = ‘1’.
ls_dropdown-value = ‘值2’.
APPEND ls_dropdown TO lt_dropdown.
CLEAR ls_dropdown.

CALL METHOD gv_alvgrid->set_drop_down_table
EXPORTING
it_drop_down = lt_dropdown.
ENDFORM.
2、设置ALV特定字段为可编辑，并给它指定下拉列表框句柄
2、Set status of column XXX to editable and set a dropdown handle.
lvc_s_fcat-edit = ‘X’.
lvc_s_fcat-drdn_hndl = ‘1’.