screen automatically updated

[Former Member]

i m having one screen which is having three I/O BOX. now when i m putting some data in first I/O box,the other two I/O box shows data automatically from database without pressing any button.

How can i do this......plz give me sample code

[Former Member]

parameters: vbeln like vbrk-vbeln modif id INV,

date like vbrk-fkdat modif id DAT.

data: flag type c.

at selection-screen output.

loop at screen.

if screen-group1 = 'INV'.

if vbeln is not initial.

flag = 'C'.

endif.

elseif screen-group1 = 'DAT'.

if flag = 'C'.

select single fkdat from vbrk into date

where vbeln = vbeln.

clear flag.

modify screen.

exit.

endif.

endif.

[Former Member]

PARAMETERS : CID TYPE ZCUSTOMERMASTER-CUSTOMERID,

PLID TYPE ZPOLICYTRANS-POLICYID.

AT SELECTION-SCREEN ON CID.

SELECT SINGLE POLICYID INTO POLICY FROM ZCUSTOMERPLANDET WHERE

CUSTOMERID = CID.

PLID = POLICY.

Now if u enter the value in CID and click enter automatically PLID get filled.

IF u r using dialog program use functioncode.

give a fcode for the i/o text field.

In module user command write like this.

Case sy-ucomm.

when 'fcode'.

SELECT SINGLE POLICYID INTO POLICY FROM ZCUSTOMERPLANDET WHERE

CUSTOMERID = CID.

PLID = POLICY.

endcase.