Can anyone explain me what is interface

Question

hi gurus
can anyone explain me what is interface
tahnk you
regards
kals.

Answer 1

Hi
by using rs_selfield
ty to call dynamic subroutine..
FORM user_command USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield. "#EC CALLED
read table rs-selfield with key cond = 'X'
endform.
see the below example
REPORT Z_GET_REFRESH no standard page heading.
type-pools : slis.
tables : makt,
mara.
data : i_fieldcat type slis_t_fieldcat_alv.
CONSTANTS :
gc_refresh TYPE syucomm VALUE '&REFRESH'.
data : begin of i_makt occurs 0,
matnr like makt-matnr,
maktx like makt-maktx,
end of i_makt.
data : v_repid like sy-repid,
g_user_command type slis_formname value 'USER_COMMAND',
g_status_set type slis_formname value 'SET_PF_STATUS',
lt_event_exit TYPE slis_t_event_exit,
ls_event_exit TYPE slis_event_exit.
DATA:LC_GLAY TYPE LVC_S_GLAY.
select-options s_matnr for mara-matnr .
start-of-selection.
select matnr maktx from makt into table i_makt
where matnr in s_matnr.
end-of-selection.
Fill the fieldcatlog
perform fill_field.
Call the FM
perform call_fm.
*& Form fill_field
text
--> p1 text
<-- p2 text
FORM fill_field.
data wa_fieldcat type slis_fieldcat_alv.
clear : wa_fieldcat.
wa_fieldcat-tabname = 'I_MAKT'.
wa_fieldcat-fieldname = 'MATNR'.
wa_fieldcat-outputlen = '18'.
wa_fieldcat-seltext_l = 'Material #'.
wa_fieldcat-col_pos = '1'.
append wa_fieldcat to i_fieldcat.
clear : wa_fieldcat.
wa_fieldcat-tabname = 'I_MAKT'.
wa_fieldcat-fieldname = 'MAKTX'.
wa_fieldcat-outputlen = '40'.
wa_fieldcat-seltext_l = 'Material Desc'.
wa_fieldcat-col_pos = '2'.
append wa_fieldcat to i_fieldcat.
ENDFORM. " fill_field
*& Form call_fm
text
--> p1 text
<-- p2 text
FORM call_fm.
v_repid = sy-repid.
LC_GLAY-EDT_CLL_CB = 'X'.
CLEAR ls_event_exit.
ls_event_exit-ucomm = gc_refresh. " Refresh
ls_event_exit-after = 'X'.
APPEND ls_event_exit TO lt_event_exit.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
I_INTERFACE_CHECK = ' '
I_BYPASSING_BUFFER =
I_BUFFER_ACTIVE = ' '
I_CALLBACK_PROGRAM = v_repid
I_CALLBACK_PF_STATUS_SET = g_status_set
I_CALLBACK_USER_COMMAND = g_user_command
I_CALLBACK_TOP_OF_PAGE = ' '
I_CALLBACK_HTML_TOP_OF_PAGE = ' '
I_CALLBACK_HTML_END_OF_LIST = ' '
I_STRUCTURE_NAME =
I_BACKGROUND_ID = ' '
I_GRID_TITLE =
I_GRID_SETTINGS = LC_GLAY
IS_LAYOUT =
IT_FIELDCAT = i_fieldcat
IT_EXCLUDING =
IT_SPECIAL_GROUPS =
IT_SORT =
IT_FILTER =
IS_SEL_HIDE =
I_DEFAULT = 'X'
I_SAVE = ' '
IS_VARIANT =
IT_EVENTS =
IT_EVENT_EXIT = lt_event_exit
IS_PRINT =
IS_REPREP_ID =
I_SCREEN_START_COLUMN = 0
I_SCREEN_START_LINE = 0
I_SCREEN_END_COLUMN = 0
I_SCREEN_END_LINE = 0
IT_ALV_GRAPHICS =
IT_ADD_FIELDCAT =
IT_HYPERLINK =
I_HTML_HEIGHT_TOP =
I_HTML_HEIGHT_END =
IT_EXCEPT_QINFO =
IMPORTING
E_EXIT_CAUSED_BY_CALLER =
ES_EXIT_CAUSED_BY_USER =
TABLES
T_OUTTAB = i_makt
EXCEPTIONS
PROGRAM_ERROR = 1
OTHERS = 2
IF SY-SUBRC 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " call_fm
FORM USER_COMMAND *
FORM user_command USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield. "#EC CALLED
data i_RSPARAMS like RSPARAMS occurs 0.
CASE R_UCOMM.
WHEN '&IC1'.
read table i_makt index rs_selfield-tabindex.
SET PARAMETER ID 'MAT' FIELD i_makt-matnr.
if not i_makt-matnr is initial.
call transaction 'MM02' and skip first screen.
endif.
when '&REFRESH'.
CALL FUNCTION 'RS_REFRESH_FROM_SELECTOPTIONS'
EXPORTING
CURR_REPORT = v_repid
IMPORTING
SP =
TABLES
SELECTION_TABLE = i_RSPARAMS
EXCEPTIONS
NOT_FOUND = 1
NO_REPORT = 2
OTHERS = 3
IF SY-SUBRC 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
submit z_get_refresh with selection-table i_RSPARAMS.
rs_selfield-refresh = 'X'.
ENDCASE.
MOVE '&REFRESH' TO r_ucomm.
ENDFORM.
FORM set_pf_status *
FORM SET_PF_STATUS USING rt_extab TYPE slis_t_extab.
DELETE Rt_extab WHERE fcode = gc_refresh.
SET PF-STATUS 'STANDARD_FULLSCREEN' OF PROGRAM 'SAPLKKBL'
EXCLUDING Rt_extab.
*SET PF-STATUS 'STANDARD' EXCLUDING rt_extab.
SET TITLEBAR sy-tcode.
ENDFORM.