For general information on how to implement Business Add-Ins, refer to the section Implementing Business Add-Ins.
The user of the screen enhancement should perform the following steps:
...
1. Create a screen of the Subscreen type. Arrange the required fields on the screen.
2. Write the program for the screen by creating either a module pool or a function group. The program could have the following contents, for example:
Topinclude:
DATA: exit TYPE REF TO
if_ex_badi_screen,
flight TYPE sflight.
TABLES sflview.
At PBO time:
MODULE status_0100
OUTPUT.
IF exit IS INITIAL.
CALL METHOD
cl_exithandler=>get_instance_for_subscreens
CHANGING
instance = exit
EXCEPTIONS
OTHERS =
6.
...
ENDIF.
CALL METHOD
exit->get_data_from_screen
IMPORTING
flight = flight
EXCEPTIONS
reserved = 1
OTHERS = 2.
...
SELECT SINGLE * FROM
sflview
WHERE carrid = flight-carrid AND
connid =
flight-connid AND
fldate =
flight-fldate.
..
ENDMODULE.
At PAI time:
If data has been changed, the method PUT_DATA_TO_SCREEN is called at PAI.
MODULE user_command_0100
INPUT.
CALL METHOD
exit->put_data_to_screen
EXPORTING
flight = flight
EXCEPTIONS
reserved = 1
OTHERS = 2.
IF sy-subrc <> 0.
...
ENDMODULE.
3. Choose the Subscreens tab. Enter the name of the called program and of the subscreen.
4. Choose the Interfaces tab.
If required, add any lines necessary to the sample code.