topic Re: at selection-screen in Application Development and Automation Discussions

at selection-screen

Former Member — Wed, 28 May 2008 12:05:15 GMT

hi..

i have some doubts in at selection-screen .

what is diff between at selection-screen , at selection-screen output and at selection-screen on value request..

can anyone explain this...

Regards,

Varadarajan.R

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:07:15 GMT

Hi,

at selection screen------when user enters the values in the feilds of the selection screen and clicks on execution button,this event gets triggered.this event is basically for checking the value entered by the user for the feild of the selection screen i.e data validity checking.this event is for entire selection screen.

at selection screen output-----

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.

For at selection-screen on value request.

refer this:

Regards,

Shiva Kumar

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:07:17 GMT

Hi,

AT SELECTION-SCREEN

Syntax

AT SELECTION-SCREEN selscreen_event.

Effect

This statement defines event blocks for different events selscreen_event that are triggered by the ABAP runtime environment during selection screen processing.

Selection screen events occur immediately before sending a selection screen and after certain user actions on a displayed selection screen. They assist in selection screen processing in the ABAP program.

AT SELECTION-SCREEN is triggered at least twice during actions on selection screens that are linked into another selection screen as a subscreen - first for the linked selection screen itself, and then for the linking selection screens.

Note

The event blocks after AT SELECTION-SCREEN are implemented internally as procedures. Declarative statments in these event blocks create local data.

AT SELECTION-SCREEN OUTPUT

The assignments to input fields in the event block AT SELECTION-SCREEN OUTPUT always affect the selection screen and overwrite the user inputs from previous displays of the same selection screen. Assignments in the event blocks LOAD-OF-PROGRAM oder INITIALIZATION, on the other hand, only have an effect at first program start.

AT SELECTION-SCREEN ON VALUE-REQUEST

This event is fired when the user hits F4 on the field. This is used to provide F4 Help for the field. Here is a sample program.

code

report zrich_0001 .

tables: t001.

data: begin of it001 occurs 0,

bukrs type t001-bukrs,

butxt type t001-butxt,

ort01 type t001-ort01,

land1 type t001-land1,

end of it001.

select-options s_bukrs for t001-bukrs.

initialization.

select bukrs butxt ort01 land1 into table it001 from t001.

at selection-screen on value-request for s_bukrs-low.

call function 'F4IF_INT_TABLE_VALUE_REQUEST'

exporting

retfield = 'BUKRS'

dynprofield = 'S_BUKRS'

dynpprog = sy-cprog

dynpnr = sy-dynnr

value_org = 'S'

tables

value_tab = it001.

start-of-selection.

[/code]

Reward for useful answers.

Regarsd,

Raj.

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:07:41 GMT

hi,

Selection screen is the screen where you give your inputs i.e the values for which you want to get the report.

AT-SELECTION SCREEN OUTPUT

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.

AT-SELECTION SCREEN ON FIELD

This event is for validating a particular field in the selection-screen.

AT SELECTION-SCREEN.

is the basic form for events on selection screen and used for validating all the selection-screen fields.

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:08:41 GMT

At-selection screen

:If you want to give a normal inout to the fields and then the control passes to the next event say start-of-selection.

At selection screen output

:if you do any modifications on the selection screen

say :you want that a field shld be Invisble on your selection screen then

AT SELECTION-SCREEN OUTPUT.

LOOP AT SCREEN.

*screen-invisible = 1.

screen-intensified = 1.

screen-color = 1.

MODIFY SCREEN.

ENDLOOP.

Hope it helps

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:08:43 GMT

When you are using this event you have to code depending on input parameter.

If it is parameter then use that code mentioned in ur question directly.

If its select-options then use separately for low and high options by providing

At selection-screen on value request for S_MATNR-LOW.

"Code.

At selection-screen on value request for S_MATNR-HIGH.

"Code.

<b>Please reward points if it is useful.</b>

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:30:17 GMT

hi,

AT SELECTION-SCREEN OUTPUT.

it gets called everytime before that selection screen appears to us.

AT SELECTION-SCREEN.

gets executed whenever u do smthing on the selection screen for eg. if u enter a value in parameters or select options and then press enter then it gets called

AT SELECTION-SCREEN ON HELP-REQUEST FOR <parameter name>.

it gets called when u do F4 on the <parameter >

reward points if useful ....

Re: at selection-screen

Former Member — Wed, 28 May 2008 12:38:38 GMT

At Selection-screen OUTPUT is trigerred in PBO of selection-screen.

- This allows you to modify the Selection-screen, before it is displayed.

At Selection-screen On value request.

- This event is trigerred for F4 help.

at selection-screen on value-request for p_fpath.

call function 'F4_FILENAME'

exporting

program_name = syst-cprog

dynpro_number = syst-dynnr

field_name = ' '

importing

file_name = p_fpath.

AT SELECTION-SCREEN.

IF p_radio1 = 'X'.

CLEAR p_radio4.

p_radio3 = 'X'.

ELSE.

IF p_radio2 = 'X'.

CLEAR p_radio3.

p_radio4 = 'X'.

ENDIF.