ABAP程序中使用REUSE_ALV_GRID_DISPLAY_LVC显示alv，如何实现行选择功能？方法如下：
1，在输出内表中，定义一个C类型字段用来标记哪些行被选中，选中的为‘X’
2，在LVC_S_LAYO-BOX_FNAME 中指定1中定义的行选择字段
完整代码：
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REPORT ztest_alv_lvc_selmode.
TYPES:BEGIN OF gty_ekko,
ebeln TYPE ekko-ebeln,
verkf TYPE ekko-verkf,
sel TYPE c, "用来标识行选择的字段
END OF gty_ekko.
DATA:git_ekko TYPE STANDARD TABLE OF gty_ekko,
gwa_ekko TYPE gty_ekko.
DATA:git_fcat TYPE lvc_t_fcat,
gwa_fcat LIKE LINE OF git_fcat,
gwa_layout TYPE lvc_s_layo.
CONSTANTS: gco_callback_user_command TYPE slis_formname VALUE 'FRM_USER_COMMAND',
gco_callback_status TYPE slis_formname VALUE 'FRM_USER_STATUS'.
START-OF-SELECTION.
SELECT ebeln
verkf
INTO CORRESPONDING FIELDS OF TABLE git_ekko
FROM ekko
UP TO 10 ROWS.
PERFORM frm_set_catalog.
gwa_layout-zebra = 'X'.
gwa_layout-box_fname = 'SEL'. "指定行选择字段
gwa_layout-cwidth_opt = 'X'.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
EXPORTING
i_callback_program = sy-repid
is_layout_lvc = gwa_layout
it_fieldcat_lvc = git_fcat
i_callback_pf_status_set = gco_callback_status
i_callback_user_command = gco_callback_user_command
TABLES
t_outtab = git_ekko[]
EXCEPTIONS
program_error = 1
OTHERS = 2.
IF sy-subrc = 0.
ENDIF.
*&---------------------------------------------------------------------*
*& Form FRM_SET_PF_STATUS
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM frm_user_status USING i_it_extab TYPE slis_t_extab.
SET PF-STATUS 'S0001' .
ENDFORM. " FRM_SET_PF_STATUS
FORM frm_user_command USING i_ucomm TYPE sy-ucomm
i_wa_selfield TYPE slis_selfield.
DATA:l_count TYPE n,
l_msg TYPE char100.
CASE i_ucomm.
WHEN 'POP'. "click POP button in application toolbar
LOOP AT git_ekko TRANSPORTING NO FIELDS WHERE sel = 'X'.
l_count = l_count + 1.
ENDLOOP.
CONCATENATE 'Select'
l_count
'rows'
INTO l_msg
SEPARATED BY space.
MESSAGE l_msg TYPE 'I'.
WHEN OTHERS.
ENDCASE.
ENDFORM.
*&---------------------------------------------------------------------*
*& Form FRM_SET_CATALOG
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM frm_set_catalog .
DATA:l_pos TYPE i VALUE 1.
CLEAR: l_pos.
l_pos = l_pos + 1.
gwa_fcat-coltext = 'PO'.
gwa_fcat-scrtext_l = 'PO'.
gwa_fcat-scrtext_m = 'PO'.
gwa_fcat-scrtext_s = 'PO'.
gwa_fcat-fieldname = 'EBELN'.
gwa_fcat-col_pos = l_pos.
gwa_fcat-outputlen = '10'.
APPEND gwa_fcat TO git_fcat.
l_pos = l_pos + 1.
gwa_fcat-coltext = 'PO item'.
gwa_fcat-scrtext_l = 'PO item'.
gwa_fcat-scrtext_m = 'PO item'.
gwa_fcat-scrtext_s = 'PO item'.
gwa_fcat-fieldname = 'VERKF'.
gwa_fcat-col_pos = l_pos.
gwa_fcat-outputlen = '20'.
APPEND gwa_fcat TO git_fcat.
ENDFORM.
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为程序创建一个status，并在上面添加一个自定义按钮POPUP
运行效果：
以上。