通过出口函数创建搜索帮助

SAP提供了预定义函数F4IF_SHLP_EXIT_EXAMPLE，创建搜索帮助。

2.复制SAP的预定义函数F4IF_SHLP_EXIT_EXAMPLE创建函数ZFVBELN_FIND_EXIT

参数和预定义函数一致，这里我们调用‘SELECT’这个时间点来进行数据的查询输出，自定义的帮助出口函数中的具体代码如下：

 1 FUNCTION zfvbeln_find_exit.
 2 *"----------------------------------------------------------------------
 3 *"*"Local interface:
 4 *"  TABLES
 5 *"      SHLP_TAB TYPE  SHLP_DESCT
 6 *"      RECORD_TAB STRUCTURE  SEAHLPRES
 7 *"  CHANGING
 8 *"     VALUE(SHLP) TYPE  SHLP_DESCR
 9 *"     VALUE(CALLCONTROL) LIKE  DDSHF4CTRL STRUCTURE  DDSHF4CTRL
10 *"----------------------------------------------------------------------
11   DATA:BEGIN OF lt_tab OCCURS 0,
12     vbeln TYPE vbeln_vl,
13     lfdat TYPE lfdat_v,
14     wbstk TYPE wbstk,
15     END OF lt_tab.
16 
17   DATA:r_vbeln TYPE RANGE OF vbeln_vl WITH HEADER LINE,
18         r_lfdat TYPE RANGE OF lfdat_v WITH HEADER LINE,
19         r_wbstk TYPE RANGE OF wbstk WITH HEADER LINE,
20         ddshselops TYPE ddshselopt.
21   IF callcontrol-step = 'SELECT'.
22     LOOP AT shlp-selopt INTO ddshselops.
23       CASE ddshselops-shlpfield.
24         WHEN 'VBELN'.
25           MOVE-CORRESPONDING ddshselops TO r_vbeln.
26           APPEND r_vbeln.
27         WHEN 'LFDAT'.
28           MOVE-CORRESPONDING ddshselops TO r_lfdat.
29           APPEND r_lfdat.
30         WHEN 'WBSTK'.
31           MOVE-CORRESPONDING ddshselops TO r_wbstk.
32           APPEND r_wbstk.
33       ENDCASE.
34     ENDLOOP.
35 
36 *根据输入参数查询数据
37     SELECT likp~vbeln likp~lfdat INTO CORRESPONDING FIELDS OF TABLE lt_tab FROM likp
38       INNER JOIN vbuk
39       ON likp~vbeln = vbuk~vbeln
40       WHERE likp~vbeln IN r_vbeln
41       AND likp~lfdat IN r_lfdat
42       AND vbuk~wbstk IN r_wbstk.
43 
44 *将查询结果回执到屏幕上来
45       CALL FUNCTION 'F4UT_RESULTS_MAP'
46 *       EXPORTING
47 *         SOURCE_STRUCTURE         =
48 *         APPLY_RESTRICTIONS       = ' '
49         TABLES
50           shlp_tab                 = SHLP_TAB
51           record_tab               = RECORD_TAB
52           source_tab               = LT_TAB
53         changing
54           shlp                     = SHLP
55           callcontrol              = CALLCONTROL
56        EXCEPTIONS
57          ILLEGAL_STRUCTURE        = 1
58          OTHERS                   = 2
59                 .
60       IF sy-subrc <> 0.
61  MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
62          WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
63       ENDIF.
64 *下一个时间点直接转到DISP，否则无法再屏幕上显示帮助列表
65             callcontrol-step = 'DISP'.  ""
66 
67   ENDIF.
68 
69 
70 
71 
72 ENDFUNCTION.

激活函数和搜索帮助，允许测试搜索帮助结果如下：