在SAP的Screen中输出List报表

1、相关命令

LEAVE TO LIST-PROCESSING [AND RETURN TO SCREEN <nnnn>].

LEAVE LIST-PROCESSING.

2、推荐设计思路

设计一个空屏幕,在需要调用list的屏幕的逻辑流中使用CALL SCREEN调用空屏幕。空屏幕的next   screen设置为0,不需要PAI,只需要在PBO中设计一个Module,这个module的具体步骤如下:

首先调用LEAVE TO LIST-PROCESSING AND RETURN TO SCREEN 0.
为list设置GUI status ;如:设置SPACE 或者为自己定义的.
使用下列语句使空屏幕不输出:

SUPPRESS DIALOG.

or

LEAVE SCREEN.  
进行List输出和处理.

4、示例

REPORT demo_leave_to_list_processing .
TABLES sdyn_conn.
DATA: wa_spfli TYPE spfli,
       flightdate TYPE sflight-fldate.

CALL SCREEN 100.

MODULE status_0100 OUTPUT.
   SET PF-STATUS 'SCREEN_100'.
ENDMODULE.

MODULE cancel INPUT.
   LEAVE PROGRAM.
ENDMODULE.

MODULE user_command_0100.
   CALL SCREEN 500.
   SET SCREEN 100.
ENDMODULE.

MODULE call_list_500 OUTPUT.
   LEAVE TO LIST-PROCESSING AND RETURN TO SCREEN 0.
   SET PF-STATUS space.
   SUPPRESS DIALOG.
   SELECT   carrid connid cityfrom cityto
     FROM   spfli
     INTO   CORRESPONDING FIELDS OF wa_spfli
     WHERE carrid = sdyn_conn-carrid.
     WRITE: / wa_spfli-carrid, wa_spfli-connid,
              wa_spfli-cityfrom, wa_spfli-cityto.
     HIDE: wa_spfli-carrid, wa_spfli-connid.
   ENDSELECT.
   CLEAR: wa_spfli-carrid.
ENDMODULE.

TOP-OF-PAGE.
   WRITE text-001 COLOR COL_HEADING.
   ULINE.

TOP-OF-PAGE DURING LINE-SELECTION.
   WRITE sy-lisel COLOR COL_HEADING.
   ULINE.

AT LINE-SELECTION.
   CHECK not wa_spfli-carrid is initial.
   SELECT   fldate
     FROM   sflight
     INTO   flightdate
     WHERE carrid = wa_spfli-carrid AND
           connid = wa_spfli-connid.
      WRITE / flightdate.
   ENDSELECT.
   CLEAR: wa_spfli-carrid.

该示例屏幕100只包含一个输入字段(SDYN_CONN-CARRID ),在屏幕100的逻辑流中会调用list处理.屏幕100的逻辑流如下:

PROCESS BEFORE OUTPUT.
   MODULE STATUS_0100.

PROCESS AFTER INPUT.
   MODULE CANCEL AT EXIT-COMMAND.
   MODULE USER_COMMAND_0100.

在屏幕100的PAI的module USER_COMMAND_100 将使用CALL SCREEN调用屏幕500。屏幕500的逻辑流中封装了所有List处理,屏幕500的逻辑流如下:

PROCESS BEFORE OUTPUT.
   MODULE CALL_LIST_500.

PROCESS AFTER INPUT.

屏幕500的PBO的module CALL_LIST_500定义了list处理代码。另外由于屏幕500的屏幕流设置为0,该程序从List处理返回时到屏幕100的USER_COMMAND_100的调用CALL SCREEN 500的语句之后.

该程序会在list处理时显示一个明细List,具体代码参见AT LINE-SELECTION、TOP-OF-PAGE 和 TOP-OF-PAGE DURING LINE-SELECTION事件代码. 

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