topic Re: At selection screen on input in Application Development and Automation Discussions

At selection screen on input

Former Member — Mon, 21 Jan 2008 10:35:49 GMT

What is the use of the event at selection-screen on input?

Re: At selection screen on input

Former Member — Mon, 21 Jan 2008 10:37:43 GMT

Hi,

This event is used mainly for validating an input provided to the selection screen element. Once a value is entered in the Selection Screen this Event gets triggered.

The syntax for this is

AT SELECTION-SCREEN ON {para/selcrit}

Effect

This event is triggered at the screen event PAI of a selection screen if the content of the input field of a parameter para or a line of a selection criterion selcrit was passed to the ABAP program. In the event block, the user input can be checked. Sending a warning or an error message in the event block makes the fields para and selcrit ready for input again.

No parameter that is defined as a radio button can be specified. For this purpose, the addition ON RADIOBUTTON GROUP is provided.

Note

If a user action takes place in the dialog box for the multiple selection of a selection criterion selcrit, the entries of the selection table are passed to the program, line by line. For each line, the event AT SELECTION-SCREEN ON selcrit is triggered.

Reward if helpful.

Re: At selection screen on input

Former Member — Mon, 21 Jan 2008 10:41:14 GMT

Hi Naveen,

The AT SELECTION-SCREEN is like the PAI module of a dialog screen for the selection screen of a report program. You can perform validations as you would in PAI.

Similarly (just for your information) the report selection screen event equivalent to PBO of a dialog program is AT SELECTION-SCREEN OUTPUT. This one allows you to default values into your report selection screen parameter/select option etc.

Hope this helps.

Regards,

Aditya

Re: At selection screen on input

Former Member — Mon, 21 Jan 2008 10:52:37 GMT

Hi naveen,

the event at selection-screen on {para|selcrit} is triggered at the screen event PAI of a selection screen if the content of the input field of a parameter para or a line of a selection criterion selcrit was passed to the ABAP program. In the event block, the user input can be checked. Sending a warning or an error message in the event block makes the fields para and selcrit ready for input again. (sap help).