hide/unhide screen elements

[Advay]

Hi,

I am using classical screen programming method.

I have a single screen which has following elements

1. A F4 help
2. input text field 1
3. input text field 2
4. A Sub Area [ which has 2 labels, Couple of custom controls (2 table controls) and couple of buttons ]

When the screen renders for the first time, only F4 help and input text fields are seen. I am able to hide sub area. Requirement is to see first 3 elements.

The hiding of sub area is done in PBO (depending upon certain input).

Once user selects F4 and chooses a value, i want to render (or unhide) the sub area.

But that doesn't happen, because control does not go back to PBO.

I have to explicitly hit a ENTER key (on the keyboard) to get the sub area.

How can I achieve this without hitting ENTER key.

• Can I forcefully invoke PBO from PAI ?
• Can I force a refresh or hitting-enter-key like scenario from PAI.
• Is there any other way of achieving this ?

Appreciate your help.

Thanks,

Advay

[venkateswaran_k]

Try with the Program Events

AT-SELECTION

AT SELECTION-SCREEN ON VALUE-REQUEST

REgards,

Venkat

[Former Member]

Hi Advay,

In your PAI, upon F4 select, use the event AT SELECTION-SCREEN ON VALUE-REQUEST, you can use the below code to unhide.

LOOP AT SCREEN.

"Here, make you subarea visible.

MODIFY SCREEN.

ENDLOOP.

Hope this helps you.

Regards,

Sindhu Pulluru.

[Advay]

Hi Sindhu,

I tried the above approach but it did not work for me.

I am not using the report program for UI display, its a screen program with PBO and PAI modules.

In the PAI I am using, PROCESS ON VALUE-REQUEST event (which internally will trigger the event that you mentioned above.)

From inside POV module, I try to unhide the screen elements, by LOOP AT SCREEN and MODIFY SCREEN code, but the elements are still hidden even the code executes.

I have to explicitly hit ENTER key to unhide the screen elements.

Note that, I want to unhide the elements only F4 selection itself and not with ENTER key.

Thanks,

Advay

[RicardoRomero_1]

Hi,

Try to simulate an ENTER within the PROCESS ON VALUE-REQUEST event with the following code:

CALL FUNCTION 'SAPGUI_SET_FUNCTIONCODE'
EXPORTING
functioncode = '=00'
EXCEPTIONS
function_not_supported = 1
OTHERS = 2.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF

.

You should put the LOOP AT SCREEN in the PBO. 

Regards,

[Advay]

Hey Recardo,

Many thanks. It worked.

Cheers,

Advay