topic Getting user input for F4 help in Application Development and Automation Discussions

Getting user input for F4 help

Former Member — Wed, 26 Aug 2009 15:21:46 GMT

Hi Guys,

I've a question, I'm sure it's something stupid but I can't get it right.

In a report, I use the event :at selection-screen on value-request for a parameter P_APPID. To get a value help for the parameter p_appid.

I'd like to use the value of another parameter in this event. But the parameter is always empty before I go to the start-of-selection. What do I have to do to get what the user type in the first parameter P_PER_CE before the start-of-selection

parameters:

P_PER_CE(5) type C

P_APPID(5) type C,

at selection-screen on value-request for P_APPID.

select * from mytable where per_ce = P_PER_CE // Even if the user entered something in P_PER_CE the value of P_PER_CE is still initial.

start-of-selection.

// here I can use P_PER_CE, it has a value.

rest of the code

Re: Getting user input for F4 help

MarcinPciak — Wed, 26 Aug 2009 18:04:53 GMT

Hi Anthony,

Yes, you are right. You will get this field empty and all the others. This is becasue in POV event (at selection-screen on value reuqest for ...) there is no automatic transport of screen fields to their corresponding parameters/select-options variables.

You have to use FM DYNP_VALUES_READ in this POV event to read them explicitly.

There are plenty of examples for this, so you will easily find how to call it. [Example link|http://sap.niraj.tripod.com/id27.html]

Futhermore if you want to update some screen field in the same POV event, you must use DYNP_VALUES_UPDATE .

This will solve your issue.

Regards

Marcin

Re: Getting user input for F4 help

Former Member — Wed, 26 Aug 2009 18:10:59 GMT

Hi,

You need to use the FM 'DYNP_VALUES_UPDATE' to get the values entered in the previous selection screen variable.

Refer:

http://sap.ittoolbox.com/groups/technical-functional/sap-abap/running-into-f4-help-issue-at-selection-screen-2370073

Re: Getting user input for F4 help

venkat_o — Thu, 27 Aug 2009 03:27:11 GMT

Clarke, Try this way.

 REPORT ztest_notepad.

 DATA: BEGIN OF it_marc OCCURS 0,
         matnr TYPE marc-matnr,
         werks TYPE marc-werks,
       END OF it_marc.
 DATA:it_dynpread TYPE TABLE OF dynpread,
      wa_dynpread LIKE LINE OF it_dynpread.
 DATA: it_return_tab TYPE ddshretval OCCURS 0,
       wa_return LIKE LINE OF it_return_tab.
 PARAMETERS:
         p_werks TYPE marc-werks,
         p_matnr TYPE marc-matnr.

 AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_matnr.

   wa_dynpread-fieldname = 'P_WERKS'.
   APPEND wa_dynpread TO it_dynpread.
   CLEAR  wa_dynpread.
  "DYNP_VALUES_READ read screen 
   CALL FUNCTION 'DYNP_VALUES_READ'
     EXPORTING
       dyname     = sy-repid
       dynumb     = sy-dynnr
     TABLES
       dynpfields = it_dynpread.
   READ TABLE it_dynpread INTO wa_dynpread INDEX 1.
   p_werks = wa_dynpread-fieldvalue.
   IF it_marc[] IS INITIAL.
     SELECT * FROM marc INTO CORRESPONDING FIELDS OF TABLE it_marc WHERE werks = p_werks.
   ENDIF.
   "F4 help F4IF_INT_TABLE_VALUE_REQUEST
   CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
     EXPORTING
       retfield    = 'MATNR'
       dynpprog    = sy-repid
       dynpnr      = sy-dynnr
       dynprofield = 'P_MATNR'
       value_org   = 'S'
     TABLES
       value_tab   = it_marc
       return_tab  = it_return_tab.
   IF sy-subrc EQ 0.
     READ TABLE it_return_tab INTO wa_return INDEX 1.
     IF sy-subrc EQ 0.
       p_matnr = wa_return-fieldval.
     ENDIF.
   ENDIF.

Thanks Venkat.O

Re: Getting user input for F4 help

Former Member — Thu, 27 Aug 2009 11:33:31 GMT

Thanks Guys for your help.

It works great. Thanks for the code extract I just had to copy it and change the parameters and works.

You made my day.