topic one simple question. in Application Development and Automation Discussions

one simple question.

Former Member — Fri, 07 Sep 2007 09:20:51 GMT

Hi All,

Can any one tell me which event in Reports(Initialization,At selection-screen,on field,output,start-of-selection,end-of-selection) is similar to PBO event of Module pool?

Points are rewarded for correct answer .

Thanks,

Priya.

Re: one simple question.

RaymondGiuseppi — Fri, 07 Sep 2007 09:22:03 GMT

The event is : AT SELECTION-SCREEN OUTPUT.

Regards

Re: one simple question.

Former Member — Fri, 07 Sep 2007 09:28:17 GMT

Yes, AT SELECTION-SCREEN OUTPUT is the event which executes before displaying of the selection screen.

Regards,

Sankar

Re: one simple question.

Former Member — Fri, 07 Sep 2007 09:35:13 GMT

Can u explain me in detail both the events? AND

What is the difference between pbo and at selection-screen output.?

Thanks,

Priya.

Re: one simple question.

Former Member — Fri, 07 Sep 2007 09:40:45 GMT

Hi,

At Selction-Screen Output can be said to be equivalent to PBO .

Now as PBO is the processing done before the screen is displayed in a module pool , in the same way for reports if you want to do some processing before the selection screen is displayed , you can write your code in it.

Few operations are

1. Assign initial values to input , but each time you go to selection screen there values will be assigned irrespective of the input you gave.

The scenario i am talking about is

Selection Screen --> Program Execution --> Report --> Back to Seelction Screen.

If you assign intial value here irrespecive of what value you gave as input the value u assign in this event will be shown in the selectionscreen (2)

So it is better to use initialization to assign initial values , as it is executed only once

2. A more important purpose is suppose you have 2 radiobuttons and about 6 fields as input , when u select one radio button and u want 3 fields to be disable and other enabled , you write code to do this in at selection-screen output.

Regards,

Sankar

Re: one simple question.

RaymondGiuseppi — Fri, 07 Sep 2007 09:45:00 GMT

AT SELECTION-SCREEN OUTPUT is executed in the generated dynpro (1000 or so) in PBO MODULE PBO_REPORT.

Regards

Re: one simple question.

Former Member — Sat, 08 Sep 2007 18:41:07 GMT

Hi Priya,

Both Initialization and AT SELECTION SCREEN OUTPUT.

In your PBO,

If you have a date field...just try like this:

PBO---->

if date is not initial.

p_date = sy-datum.

endif.

Regards,

Hari krishna

Re: one simple question.

Former Member — Sat, 08 Sep 2007 18:56:43 GMT

Hi Priya,

check this link: -

http://www.sap-img.com/abap/different-types-of-selection-screens.htm

... OUTPUT

Effect

This event is executed at PBO of the selection screen every time the user presses ENTER - in contrast to INITIALIZATION. Therefore, this event is not suitable for setting selection screen default values. Also, since AT SELECTION-SCREEN OUTPUT is first executed after the variant is imported (if a variant is used) and after adopting any values specified under SUBMIT in the WITH clause, changing the report parameters or the selection options in AT SELECTION-SCREEN OUTPUT would destroy the specified values.

Here, however, you can use LOOP AT SCREEN or MODIFY SCREEN to change the input/output attributes of selection screen fields.

Example

Output all fields of the SELECT-OPTION NAME highlighted:

SELECT-OPTIONS NAME FOR SY-REPID MODIF ID XYZ.

...

AT SELECTION-SCREEN OUTPUT.

LOOP AT SCREEN.

CHECK SCREEN-GROUP1 = 'XYZ'.

SCREEN-INTENSIFIED = '1'.

MODIFY SCREEN.

ENDLOOP.

The addition MODIF ID XYZ to the key word SELECT-OPTIONS assigns all fields of the selection option NAME to a group you can read in the field SCREEN-GROUP1. At PBO of the selection screen, all these fields are then set to highlighted.

You can have all info about at selection-screen, if you enter it into an ABAP editor (SE38) and press F1 on the text...

AT SELECTION-SCREEN OUTPUT is triggered before showing the selection-screen so it's used to change the attributes of the input/output fields (like parameter and select-option). For example it can use to hide some fields:

LOOP AT SCREEN.

IF SCREEN-NAME = <......>.

SCREEN-ACTIVE = 0.

MODIFY SCREEN.

ENDIF.

ENDLOOP.