Hi,
Input Help on the Screen
Within the Screen Painter, you can define two types of input help:
1. The FIELD statement with one of the additions VALUES or SELECT.
2. Linking a search help directly to a screen field.
If you link a search help directly to a screen field, it overrides the additions of the FIELD
statement. However, the input check [Page 581] functions of the FIELD statement remain
unaffected.
Input Help in Flow Logic
The following input help methods are obsolete and should not be used. They are still supported
for compatibility reasons.
In the screen flow logic, you can specify a value list for a screen field <f> as follows:
FIELD <f> VALUES (<val1>, <val2>,...).
The value list contains a series of single values <vali>. The NOT and BETWEEN additions for the
input check [Page 581] are not appropriate for input help.
You can also create a value list by accessing a database table as follows:
FIELD <f> SELECT *
FROM <dbtab>
WHERE <k1> = <f1> AND <k2> = <f2> AND...
In the WHERE condition, the fields of the primary key <ki> of the database table <dbtab> are
checked against the screen fields <fi>. The WHENEVER addition, used with input checks [Page
581], is not necessary for input help.
If you have used a ABAP Dictionary reference for field <f>, the selection and the hit list formatting
may be affected by any check table attached to the field.
Attaching a Search Help
Search helps from the ABAP Dictionary can be attached to a screen field [Ext.]. To do this, enter
the name of the search help in the corresponding field in the attributes of the screen field in the
Screen Painter. This assigns the first parameter of the search help to the screen field. It is only
possible to place a value from the hit list onto the screen.
Input help on a screen.
REPORT DEMO_DYNPRO_F4_HELP_DYNPRO MESSAGE-ID AT.
DATA: CARRIER(3) TYPE C,
CONNECTION(4) TYPE C.
CALL SCREEN 100.
MODULE CANCEL INPUT.
LEAVE PROGRAM.
ENDMODULE.
The next screen (statically defined) for screen 100 is itself. It has the following layout:
602 April 2001
Cancel
Airline
Flight number
Screen field with search help
Input help in the flow logic
The input fields have been adopted from the program fields CARRIER and
CONNECTION. The function code of the pushbutton is CANCEL, with function type
E. The search help DEMO_F4_DE with the search help parameter CARRID is
assigned to the screen field CARRIER. The search help uses the database table
SCARR.
The screen flow logic is as follows:
PROCESS BEFORE OUTPUT.
PROCESS AFTER INPUT.
MODULE CANCEL AT EXIT-COMMAND.
FIELD CARRIER VALUES ('AA', 'LH').
FIELD CONNECTION SELECT *
FROM SPFLI
WHERE CARRID = CARRIER
AND CONNID = CONNECTION.
When the user chooses the input help for the individual fields, the following input
help is displayed:
For the Airline field, the search help displays the names of the airlines and places the airline
code in the input field for the chosen line. If the airline code is not one of those listed in the
VALUES list of the screen flow logic, the input check triggers an error message in the PAI
event. So the search help overrides the VALUES addition for the input help, but not for the
input checks. This is therefore not an appropriate place to use the VALUE addition.
For the Flight number field, the flow logic displays the selected entries from the database
table SPFLI and places the selected line in the input field.
Regards,
Bhaskar
Bluesky
