What is the difference between the initialization and at selection screen output events?

What is the difference between AT selection screen and at selection screen on field

At selection-screen is the event in list processing before start of selection. At selection-screen field is used or writing the validation for that field.

What is the use of initialization event in ABAP

INITIALIZATION. This event keyword defines an event block for initializing an executable program. The associated event is raised by the ABAP runtime environment during the flow of an executable program, directly after LOAD-OF-PROGRAM and before the selection screen processing of any existing standard selection screen.

Which event is executed first at selection screen or at selection screen output in SAP ABAP

At selection-screen output is PBO event of Selection screen. At selection-screen is PAI event of Selection screen.

What is at selection screen in SAP ABAP

Selection screens are special dynpros that are not created in Screen Painter, but rather are generated from ABAP statements. You use them whenever you want the user to enter either a single value for a field or fields, or to enter selection criteria. ABAP programs use screens to obtain input from users.

Which event occurs before the standard selection screen is called

whenever selection screen displayes this event will be called. INITIALIZATION events in your program, this will be fired first when running the program, before the selection screen, if there is one, is fired.Nov 15, 2006

What are the events in Report program SAP

Events in Classical Report:

• LOAD-OF-PROGRAM : First event fired, loads program in memory.
• INITIALIZATION: Initialize variable.
• START-OF-SELECTION : Actual Business Logic (After START-OF-SELECTION)
• END-OF-SELECTION : To end above.

How do I create a variant for a selection screen

Procedure

1. Call up the report for which you want to define a selection variant.
2. In the selection screen of the report, choose. Goto.
3. Give the variant a name and define additional criteria for the display of the variant.
4. Specify the selection screen to which the variant is assigned.
5. Save your entries.

What is the difference between the initialization and at selection screen output events

Hi, initialization is the event where you can initialize the selection with some default values. this is the first event which triggers after load of program. and coming to at selection-screen output , it is like PBO it will trigger twice for every run.Nov 15, 2006

How do you make a field invisible in selection screen in ABAP

screen-invisible = '0'. modify screen. endif. endloop.7 Feb 2007

What is start-of-Selection in SAP ABAP

START-OF-SELECTION. Effect. This event keyword defines the standard processing block of an executable program. The associated event is raised by the ABAP runtime environment during the running of an executable program after any standard selection screens have been processed.

What is load-of-program in SAP ABAP

LOAD-OF-PROGRAM. Effect. This event keyword defines the program constructor of an executable program, a module pool, a function group, or a subroutine pool.

What is search help in SAP ABAP

Definition. Search helps are objects that you can use to assign input help (F4 Help) to screen fields. You can do this by creating a search help in the ABAP Dictionary and attaching it to the corresponding screen field. Use. The input help (F4 help) is a standard function of the SAP system.

What is the use of at selection screen

The event AT SELECTION-SCREEN itself is raised as the last event in selection screen processing if all the input values were passed to the program. All user input can be checked in this event block. Sending a warning or an error message in the event block makes all the screen fields ready for input once again.

Which event is used for handling selection screen

The information about which selection screen raised the event is in the system field sy-dynnr. This event is raised by the dynpro event PBO of a selection screen.

Which event is called before displaying the selection screen

If user-defined selection screens are called, the event sequence is imbedded accordingly in the current program flow. Selection screen processing starts after the INITIALIZATION event with AT SELECTION SCREEN OUTPUT . The selection screen is then sent to the screen.

Why do we use initialization

Initialization is the process of locating and using the defined values for variable data that is used by a computer program. For example, an operating system or application program is installed with default or user-specified values that determine certain aspects of how the system or program is to function.

What is end-of-selection in ABAP

The statement defines an event block whose event is raised as follows by the ABAP runtime environment during the process flow of the executable program: If the executable program is associated with a logical database, END-OF-SELECTION is raised (if the logical database has fully completed its work).

What are the events in classical reports

Classical Report Events

• Load-of-program.
• Initialization.
• At Selection-Screen output.
• At Selection-Screen on field.
• At Selection-Screen on value request.
• At Selection-Screen on help request.
• At Selection-Screen.
• Start-of-Selection.