Search help on custom screen

Question

Hi,
I have a question regarding search help on screen.
I have searched, but did not find anything for my requirement.
Here is my requirement...............
I have a drop down on one of the field of the custom screen. This dropdown has three items to choose from.
e.g.
Dropdown has  PO, Reservation and  Pcard.
And the other custom field is "Source". I want to put seach help on "Source" field.
So my requirement is to when user chooses PO in dropdown, they should get search help for PO on "Source" field.
And when user chooses Reservation in dropdown, they should get search help for Reservation on "Source" field.
Is it possible to that? If yes, then how should i proceed for that?
Any help would be appriciatable!!
Thanks in Advance .

Answer 1

HI Varam.
Plesae copy this code and Paste in ABAP Editor and Format properly You will know it as it is appearing in Continuous Lines
And i dont know how to rectify it. Hopp you understand it
-->In Screen PVO
-->PROCESS ON VALUE-REQUEST.
-->  FIELD Screen-Field MODULE f4_get.
-->in program
-->MODULE f4_get INPUT.
  DATA : BEGIN OF f4_tab OCCURS 0,
define Required Fields here
    END OF f4_tab.
  GET CURSOR FIELD fnam VALUE fval.
  DATA : dynpread TYPE TABLE OF dynpread WITH HEADER LINE.
refresh dynpread.
  dynpread-fieldname = 'Screen-Field'.
  APPEND dynpread.
  CLEAR dynpread.
  CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname                               = sy-repid
      dynumb                               = sy-dynnr
    TRANSLATE_TO_UPPER                   = ' '
    REQUEST                              = ' '
    PERFORM_CONVERSION_EXITS             = ' '
    PERFORM_INPUT_CONVERSION             = ' '
    DETERMINE_LOOP_INDEX                 = 'X'
    START_SEARCH_IN_CURRENT_SCREEN       = 'X'
    START_SEARCH_IN_MAIN_SCREEN          = 'X'
    START_SEARCH_IN_STACKED_SCREEN       = ' '
    START_SEARCH_ON_SCR_STACKPOS         = ' '
    SEARCH_OWN_SUBSCREENS_FIRST          = ' '
    SEARCHPATH_OF_SUBSCREEN_AREAS        = ' '
    TABLES
      dynpfields                           = dynpread
   EXCEPTIONS
     invalid_abapworkarea                 = 1
     invalid_dynprofield                  = 2
     invalid_dynproname                   = 3
     invalid_dynpronummer                 = 4
     invalid_request                      = 5
     no_fielddescription                  = 6
     invalid_parameter                    = 7
     undefind_error                       = 8
     double_conversion                    = 9
     stepl_not_found                      = 10
     OTHERS                               = 11
  IF sy-subrc IS INITIAL.
    READ TABLE dynpread WITH KEY fieldname = 'Screen-field'.
    IF sy-subrc IS INITIAL.
      SELECT Your Fields FROM Required FIelds
            INTO TABLE f4_tab
             WHERE Required Condions.
      CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
        EXPORTING
        DDIC_STRUCTURE         = ' '
          retfield               = 'RETURN FIELD' To which the F4 value to be passed on to screen
        PVALKEY                = ' '
         dynpprog               = sy-repid
         dynpnr                 = sy-dynnr
         dynprofield            = 'Screen-Field' --> All single Quote Values to be Capital Letters
        STEPL                  = 0
        WINDOW_TITLE           =
        VALUE                  = ' '
         value_org              = 'S'
        MULTIPLE_CHOICE        = ' '
        DISPLAY                = ' '
        CALLBACK_PROGRAM       = ' '
        CALLBACK_FORM          = ' '
        MARK_TAB               =
      IMPORTING
        USER_RESET             =
        TABLES
          value_tab              = f4_tab
        FIELD_TAB              =
        RETURN_TAB             =
        DYNPFLD_MAPPING        =
      EXCEPTIONS
        PARAMETER_ERROR        = 1
        NO_VALUES_FOUND        = 2
        OTHERS                 = 3
      IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.
    ENDIF.
  ENDIF.
ENDMODULE.                 " f4_get  INPUT
Edited by: Ramchander Krishnamraju on Oct 31, 2009 4:32 AM