Triggering Events on List Box dropdown

[vasantakumar_anivilla]

Is there any possibility to trigger an event on selection of a particular item of a list-box?

The requirement is to Enable/Disable the fields of a Selection Screen depending on the values of the List-Box Dropdown.

Any pointers to this regard would be helpful.

Regards,

Vasant....

[Former Member]

HI,

refer sample code:

SELECTION-SCREEN BEGIN OF BLOCK c WITH FRAME TITLE text-005.

PARAMETERS : p_field TYPE dd03l-fieldname AS LISTBOX

VISIBLE LENGTH 80 OBLIGATORY.

SELECTION-SCREEN END OF BLOCK c.

INITIALIZATION.

*-- Populate List Box

*-- TEMKSV - Legacy Value

wa_value-key = 'TEMKSV'.

wa_value-text = 'Legacy Key'.

APPEND wa_value TO i_value.

CLEAR: wa_value.

*-- Installation

wa_value-key = 'INSTLN'.

wa_value-text = 'Installation'.

APPEND wa_value TO i_value.

CLEAR: wa_value.

• Setting the selection

CALL FUNCTION 'VRM_SET_VALUES'

EXPORTING

id = 'P_FIELD'

values = i_value.

CASE p_field.

WHEN 'TEMKSV'.

*-- Delete Object

PERFORM delete_temksv.

WHEN 'INSTLN'.

*-- Delete Installation

PERFORM delete_installation.

endcase.

refer std prg if u need to do the same in Module pool program - RSDEMO_DROPDOWN_LISTBOX

Reward points if this Helps.

Manish

[Former Member]

hi Vasanta Kumar,

please use the statement mentioned below to have an action triggered, while selecting a value from list box:

PARAMETERS p_carrid TYPE spfli-carrid 
                    AS LISTBOX VISIBLE LENGTH 20 
                    USER-COMMAND onli 
                    DEFAULT 'LH'.

at selection-screen output.
     if not lv_flag is initial.
           loop at screen.
                  if screen-name = 'the one you want to enable/disable, in CAPS'.
                             screen-input = 0. " to disable or '1' to enable
                             modify screen.
                  endif.
           endloop.
at selection-screen.

if sscrfields-ucomm = 'ONLI'."    (or you can use SY_UCOMM).
    lv_flag = 'X'.
else.
    clear lv_flag.
endif.

Hope this helps,

Sajan Joseph.

[vasantakumar_anivilla]

I need the event to be triggered as and when when the option from the dropdown is selected in the report program(something like a radio-button).

The suggestions mentioned here doesnt trigger the event at that particular instant.

Your obsevations regarding this would be helpful.

[Former Member]

Hi there. What you want is not possible as you need to trigger the PAI processing by pressing a button. There is no actual communication between your program and the SAP server becuase your program is in a "rolled out" state. The selection is only happening in your GUI but not yet reflected in your field.

[Former Member]

all you have to do is assign a Function Code to the list box.... this way every time to make a selection in your list box...... PAI gets triggerd...... in pai u can check for the value of the list box and accordingly enable/disable the feilds.

[Former Member]

Hey Vasant,

Assign function code for that text field.

and populate values through VRM_SET_VALUES.

then in PAI check for that function code and also the field value.

it means the VRM will set values to that field.

regards

Satish

[vasantakumar_anivilla]

ok