How to capture the selected values from module pool dialog list box !

Question

Hi experts,
Can anyone help me out in capturing the values from the list box.
i am able to set the values in the list box.But i am not able to capture the selected value from the list box. Always the list box name is getting as "space"
I also tried in using the FM "VRM_GET_VALUES" but it is retireving all the values. Is there is any flag for filttering out the selected value.
Your inputs are appreciated.
Thanks,
Vijay.

Answer 1

Along with the PBO and PAI event, add a POV event in the flow logic of the screen
DEMO_DROPDOWN_LIST_BOX -is a good demo example.
PROCESS ON VALUE-REQUEST.
FIELD structure_name-field_name MODULE create_dropdown_box.
In the report :
MODULE create_dropdown_box INPUT.
  SELECT carrid carrname
                FROM scarr
                INTO CORRESPONDING FIELDS OF TABLE itab_carrid.
  CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
       EXPORTING
            retfield        = 'CARRID'
            value_org       = 'S'
       TABLES
            value_tab       = itab_carrid
       EXCEPTIONS
            parameter_error = 1
            no_values_found = 2
            OTHERS          = 3.
  IF sy-subrc <> 0.
  ENDIF.
ENDMODULE.
In the layout, assign a Function Code , for eg : 'SELECTED' to the listbox and lets say name of the field is SDYN_CONN-CARRID. So in the PAI module,
MODULE user_command_0100 INPUT.
  CASE ok_code.
    WHEN 'SELECTED'.
      MESSAGE i888(sabapdocu) WITH sdyn_conn-carrid.
  ENDCASE.
ENDMODULE.
sdyb_conn-carrid will contain your selected field