ABAP程序中调用REUSE_ALV_GRID_DISPLAY_LVC显示ALV，经常会有双击某行或某字段跳转到其他tcode的需求。下面简单介绍一下。
双击事件的ucomm是'&IC1'.
完整代码：
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REPORT ztest_alv_lvc_2click.
TYPES:BEGIN OF gty_ekko,
ebeln TYPE ekko-ebeln,
verkf TYPE ekko-verkf,
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'.
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-sel_mode = 'A'.
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_user_command = gco_callback_user_command
TABLES
t_outtab = git_ekko[]
EXCEPTIONS
program_error = 1
OTHERS = 2.
IF sy-subrc = 0.
ENDIF.
FORM frm_user_command USING i_ucomm TYPE sy-ucomm
i_wa_selfield TYPE slis_selfield.
CASE i_ucomm.
WHEN '&IC1'. "Double click
* if click on PO field, jump to me23n
IF i_wa_selfield-fieldname = 'EBELN'.
SET PARAMETER ID 'BES' FIELD i_wa_selfield-value.
CALL TRANSACTION 'ME23N' AND SKIP FIRST SCREEN.
ENDIF.
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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运行：
跳转到me23n显示采购订单3000000100
以上。