ABAP SCROLL Statement syntax and functionality in SAP

SCROLL LIST

Short Reference

ABAP Syntax SCROLL LIST [
horizontal ]
[ vertical ]
[INDEX idx].

ABAP_ADDITION:
... INDEX idx

What does it do? This statement scrolls the display area of a list stored in the list buffer to the position specified in horizontal and/or vertical . At least one of these additions must be specified, in which all horizontal specifications refer to the columns of a displayed list. The corresponding section is displayed when the list is next displayed.
Without using the statement SCROLL , the system displays a list during the initial display, starting from the first column of the first row. If the user navigates from a details list back to a lower list level, the list is displayed with the section in which it was last displayed. The SCROLL statement sets a new first column, a new first row, or both. Each SCROLL statement sets only the size specified in it, without changing the other positions.

ABAP_ADDITION ... INDEX idx

What does it do? The list level can be specified with the addition
INDEX , where a data object (which contains the list index) of type i is expected for idx . The value of idx must be greater than or equal to 0. If the addition INDEX is not specified, then the list level 0 (the basic list itself) is selected during the creation of the basic list, and the list level at which the event was triggered ( sy-listi ) is selected during the processing of a list event. If the list level specified in idx is not available, sy-subrc is set to the value 8.

System Fields
sy-subrc Meaning
0Screen section was scrolled.
4Complete scrolling not possible because the list margin was reached.
8Scrolling not possible because the specified list level does not exist.

Latest notes: While scrolling through the list that is being created (
sy-lsind ), remember that a SCROLL statement has no effect prior to the first output statement, since the list does not yet exist in the list buffer.

Example ABAP Coding By double-clicking the basic list, you can scroll down this list in the AT LINE-SELECTION event block to the page entered in a
selection screen . The lines on the page retain their original position with reference to the page header
by using sy-staro . However, you do not need to explicitly set the column to sy-staco , since this position is retained during vertical scrolling.
REPORT LINE-COUNT 100 LINE-SIZE 100
NO STANDARD PAGE HEADING.

SELECTION-SCREEN BEGIN OF SCREEN 500 AS WINDOW.
PARAMETERS page TYPE i.
SELECTION-SCREEN END OF SCREEN 500.

START-OF-SELECTION.
DO 10000 TIMES.
WRITE sy-index.
ENDDO.

TOP-OF-PAGE.
ULINE.
WRITE sy-pagno.
ULINE.

AT LINE-SELECTION.
CALL SELECTION-SCREEN 500 STARTING AT 10 10.
SCROLL LIST TO COLUMN sy-staco
TO PAGE page LINE sy-staro.

ABAP SCROLL Statement syntax, information and example SAP source code