2.SYSTEM-CALL:DY_GET_SET_FIELD_VALUE
说明：获得或者设置屏幕字段的值
参数：
ID 'GET_SET' FIELD 'S' "S:Set mode G:Get mode
ID 'SSCREENNAM' FIELD SHSUBSCREEN
ID 'SSCREENNBR' FIELD SHSUBSCREENNO
ID 'MSCREENNAM' FIELD SHSCREEN
ID 'MSCREENNBR' FIELD SHSCREENNO
ID 'FIELDNAME' FIELD DYNP_EXPORT
ID 'LINE' FIELD DYNP_EXSTEPL
ID 'VALUE' FIELD DYNP_EXPVAL.
例子：我做了一个检索help的exit，例如屏幕上有两个字段，我按了一个字段的检索help，那么根据这个字段就会取得相应的另外一个字段的值，然后把这个之设置到第二个字段。
FUNCTION ZTEST_F4.
*"----------------------------------------------------------------------
*"*"Local interface:
*" TABLES
*" SHLP_TAB TYPE SHLP_DESCT
*" RECORD_TAB STRUCTURE SEAHLPRES
*" CHANGING
*" REFERENCE(SHLP) TYPE SHLP_DESCR
*" REFERENCE(CALLCONTROL) LIKE DDSHF4CTRL STRUCTURE DDSHF4CTRL
*"----------------------------------------------------------------------
* Local data definition
DATA: L_ZZOINO(3) TYPE C.
DATA: L_ZZPOSID(10) TYPE C.
DATA: DYNP_EXPORT(132), DYNP_EXPVAL(132).
DATA: DYNP_EXSTEPL TYPE I, OK, DUMMYCHAR.
DATA: DUMMYOFFS TYPE I.
DATA: SHSUBSCREEN LIKE HELP_INFO-DYNPPROG,
SHSUBSCREENNO LIKE HELP_INFO-DYNPRO,
SHSCREEN LIKE HELP_INFO-DYNPPROG,
SHSCREENNO LIKE HELP_INFO-DYNPRO.
DATA: CURRSUBSCREEN LIKE HELP_INFO-DYNPPROG,
CURRSUBSCREENNO LIKE HELP_INFO-DYNPRO,
CURRSCREEN LIKE HELP_INFO-DYNPPROG,
CURRSCREENNO LIKE HELP_INFO-DYNPRO.
DATA: CURSOR_FIELD LIKE DYNPREAD-FIELDNAME, CURSOR_LINE TYPE I.
DATA: SETCURSOR_AVAILABLE TYPE I.
* Get record value from record table
READ TABLE RECORD_TAB INDEX 1.
L_ZZPOSID = RECORD_TAB+0(10).
IF SHLP_TAB-INTDESCR-HOTKEY IS INITIAL.
L_ZZOINO = RECORD_TAB+10(3).
ENDIF.
* Check command, if return, set screen
IF CALLCONTROL-STEP = 'RETTOP'.
* Initialize screen, get screen focus
CALL 'DY_GET_FOCUS'
ID 'SSCREENNAM' FIELD CURRSUBSCREEN
ID 'SSCREENNBR' FIELD CURRSUBSCREENNO
ID 'MSCREENNAM' FIELD CURRSCREEN
ID 'MSCREENNBR' FIELD CURRSCREENNO
ID 'FIELDNAME' FIELD CURSOR_FIELD
ID 'FIELDOFFS' FIELD DUMMYOFFS
ID 'LINE' FIELD CURSOR_LINE.
* Set screen parameter
GET PARAMETER ID 'RID' FIELD SHSUBSCREEN .
SHSCREEN = SHSUBSCREEN.
GET PARAMETER ID 'DYN' FIELD SHSUBSCREENNO.
SHSCREENNO = SHSUBSCREENNO.
DYNP_EXPORT ='V_WA_DYNPRO_9000-ZZOINO'.
DYNP_EXPVAL = L_ZZOINO.
* System call for set screen
CALL 'DY_GET_SET_FIELD_VALUE'
ID 'GET_SET' FIELD 'S' "Set mode
ID 'SSCREENNAM' FIELD SHSUBSCREEN
ID 'SSCREENNBR' FIELD SHSUBSCREENNO
ID 'MSCREENNAM' FIELD SHSCREEN
ID 'MSCREENNBR' FIELD SHSCREENNO
ID 'FIELDNAME' FIELD DYNP_EXPORT
ID 'LINE' FIELD DYNP_EXSTEPL
ID 'VALUE' FIELD DYNP_EXPVAL.
* System call for set screen
DYNP_EXPORT ='V_WA_DYNPRO_9000-ZZPOSID'.
DYNP_EXPVAL = L_ZZPOSID.
CALL 'DY_GET_SET_FIELD_VALUE'
ID 'GET_SET' FIELD 'S' "Set mode
ID 'SSCREENNAM' FIELD SHSUBSCREEN
ID 'SSCREENNBR' FIELD SHSUBSCREENNO
ID 'MSCREENNAM' FIELD SHSCREEN
ID 'MSCREENNBR' FIELD SHSCREENNO
ID 'FIELDNAME' FIELD DYNP_EXPORT
ID 'LINE' FIELD DYNP_EXSTEPL
ID 'VALUE' FIELD DYNP_EXPVAL.
ENDIF.
ENDFUNCTION.