Doubts in F4 help

Question

Hi,
I want to attach value help to a field. I also want to make that field as non-editable so that the user chooses only from F4 help. So i made an input field as non-editable and attached a F4 help to it. But when i try to choose value from the F4 help, it is not filling in the input field. Can some one help me with this.
Thanks and Regards,
Chander

Answer 1

Hi,
You cannot make that as non-editable.But here is the way that you can restrict other values in module pool.If you pressed enter after executing this code,then if that value entered is not in f4 help,it will automatically be removed.
PROCESS AFTER INPUT.
FIELD s_begru MODULE abc ON INPUT.
Process on value-request.
field s_begru module f4_help.
REPORT  ZZZ_JAYTEST1                            .
tables kna1.
data:
begin of t_values occurs 2,
value like kna1-begru,
end of t_values,
t_return like ddshretval occurs 0 with header line.
data s_begru like kna1-begru.
call screen 9000.
module f4_help input.
refresh t_values.
t_values = 'PAR*'.
append t_values.
t_values = 'UGG'.
append t_values.
call function 'F4IF_INT_TABLE_VALUE_REQUEST'
exporting
retfield = 'BEGRU'
value_org = 'S'
tables
value_tab = t_values
return_tab = t_return
exceptions
parameter_error = 1
no_values_found = 2
others = 3.
if sy-subrc = 0.
read table t_return index 1.
s_begru = t_return-fieldval.
endif.
endmodule.                 " f4_help  INPUT
module abc input.
read table t_values with key value = s_begru.
if sy-subrc ne 0.
clear s_begru.
endif.
endmodule.                 " abc  INPUT
Kindly let me know if you need further clarification.Otherwise,kindly reward points by clicking the star on the left of reply,if it helps.