Sample ABAP Program of Dialogue Module Pool

PROGRAM YLWMM005 MESSAGE-ID YL.
*-----------------------------------------------------------------------
* maintain additional fields on table t336 - difference indicators
* written by sheila titchener
*-----------------------------------------------------------------------
TABLES: T336, " Difference indicators
T300T, " Warehouse description
T336T. " Difference indicator text


DATA: OK_CODE(4),
OK_CODE2(4),
W_ERR_FLAG.
DATA: BEGIN OF XT336 OCCURS 1,
X LIKE T336,
DTEXT LIKE T336T-DTEXT,
END OF XT336.
DATA C LIKE SY-INDEX.
*&---------------------------------------------------------------------*
*& Module USER_COMMAND_0100 INPUT
*&---------------------------------------------------------------------*
* text *
*----------------------------------------------------------------------*
MODULE USER_COMMAND_0100 INPUT.
* Warehouse must not be space.
CHECK T336-LGNUM NE ' '.

CASE OK_CODE.
WHEN 'SAVE'.
PERFORM SAVE_T336.
WHEN 'DISP'.
PERFORM DISPLAY_T336.
WHEN 'LIST'.
C = 0.
PERFORM LIST_T336.
WHEN OTHERS.
PERFORM DISPLAY_T336.
ENDCASE.
CLEAR OK_CODE.
ENDMODULE. " USER_COMMAND_0100 INPUT
*&---------------------------------------------------------------------*
*& Module STATUS_0100 OUTPUT
*&---------------------------------------------------------------------*
* text *
*----------------------------------------------------------------------*
MODULE STATUS_0100 OUTPUT.
SET PF-STATUS 'AMEND'.
SET TITLEBAR '100'.
ENDMODULE. " STATUS_0100 OUTPUT
*&---------------------------------------------------------------------*
*& Form SAVE_T336
*&---------------------------------------------------------------------*
* Save screen details
*&---------------------------------------------------------------------*
FORM SAVE_T336.
* reread record to make sure key is for last record read
* but store new value of ZZNOTO first
DATA: W_ZZNOTO LIKE T336-ZZNOTO.
W_ZZNOTO = T336-ZZNOTO.
SELECT SINGLE * FROM T336
WHERE LGNUM = T336-LGNUM
AND KZDIF = T336-KZDIF .
IF SY-SUBRC = 0.
T336-ZZNOTO = W_ZZNOTO.
UPDATE T336.
MESSAGE I018 WITH 'T336'.
COMMIT WORK.
ELSE.
MESSAGE I029 WITH T336-LGNUM T336-KZDIF.
W_ERR_FLAG = 'Y'.
ENDIF.
*
CLEAR OK_CODE.
ENDFORM.
*&---------------------------------------------------------------------*
*& Form DISPLAY_LOC
*&---------------------------------------------------------------------*
*----------------------------------------------------------------------*
FORM DISPLAY_T336.
W_ERR_FLAG = 'N'.
*
SELECT SINGLE * FROM T336
WHERE LGNUM = T336-LGNUM
AND KZDIF = T336-KZDIF.
IF SY-SUBRC NE 0.
MESSAGE I065.
W_ERR_FLAG = 'Y'.
ENDIF.
CLEAR T300T-LNUMT.
SELECT SINGLE * FROM T300T
WHERE SPRAS = SY-LANGU
AND LGNUM = T336-LGNUM.

SELECT SINGLE * FROM T336T
WHERE SPRAS = SY-LANGU
AND LGNUM = T336-LGNUM
AND KZDIF = T336-KZDIF.

* Abort if no warehouse
CHECK W_ERR_FLAG = 'N'.
*

ENDFORM.
*&---------------------------------------------------------------------*
*& Module EXIT_COMMAND INPUT
*&---------------------------------------------------------------------*
* exit commands are processed before validation *
*----------------------------------------------------------------------*
MODULE EXIT_COMMAND INPUT.

CASE OK_CODE.
WHEN 'EXIT'. CLEAR OK_CODE. SET SCREEN 0. LEAVE SCREEN.
WHEN 'CANC'. CLEAR OK_CODE. SET SCREEN 0. LEAVE SCREEN.
WHEN 'BACK'. CLEAR OK_CODE. SET SCREEN 0. LEAVE SCREEN.
ENDCASE.
ENDMODULE. " EXIT_COMMAND INPUT
*&---------------------------------------------------------------------*
*& Form READ_T336
*&---------------------------------------------------------------------*
* text *
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM LIST_T336.
DATA: T336-DTEXT_ST LIKE T336T-DTEXT.


T336-DTEXT_ST = T336T-DTEXT.
SELECT * FROM T336 INTO TABLE XT336
WHERE LGNUM = T336-LGNUM.

LOOP AT XT336.

SELECT SINGLE * FROM T336T
WHERE SPRAS = 'E'
AND LGNUM = T336-LGNUM
AND KZDIF = XT336-X-KZDIF.
XT336-DTEXT = T336T-DTEXT.
MODIFY XT336.
ENDLOOP.
T336T-DTEXT = T336-DTEXT_ST.
CLEAR OK_CODE. SET SCREEN 200. LEAVE SCREEN.

ENDFORM. " LIST_T336
*&---------------------------------------------------------------------*
*& Module EXIT_COMMAND_200 INPUT
*&---------------------------------------------------------------------*
* text *
*----------------------------------------------------------------------*
MODULE EXIT_COMMAND_200 INPUT.

CASE OK_CODE2.
WHEN 'EXIT'. CLEAR OK_CODE2. SET SCREEN 0. LEAVE SCREEN.
WHEN 'CANC'. CLEAR OK_CODE2. SET SCREEN 0. LEAVE SCREEN.
WHEN 'BACK'. CLEAR OK_CODE2. SET SCREEN 100. LEAVE SCREEN.
ENDCASE.
ENDMODULE. " EXIT_COMMAND_200 INPUT
*&---------------------------------------------------------------------*
*& Module STATUS_0200 OUTPUT
*&---------------------------------------------------------------------*
* text *
*----------------------------------------------------------------------*
MODULE STATUS_0200 OUTPUT.
SET PF-STATUS 'POPUP'.
* SET TITLEBAR 'xxx'.
IF T300T-LGNUM NE T336-LGNUM.

SELECT SINGLE * FROM T300T
WHERE SPRAS = SY-LANGU
AND LGNUM = T336-LGNUM .
ENDIF.
ENDMODULE. " STATUS_0200 OUTPUT