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：

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.

运行：

<img class="alignnone size-full wp-image-3993" src="http://www.baidusap.com/wp-content/uploads/2017-03-21\_9-40-23.png" alt="" width="371" height="312" />

跳转到me23n显示采购订单3000000100

<img class="alignnone size-full wp-image-3994" src="http://www.baidusap.com/wp-content/uploads/2017-03-21\_9-41-49.png" alt="" width="715" height="334" />

以上。