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DESCRIBE LIST

Short Reference

Syntax

DESCRIBE LIST { {NUMBER OF {LINES|PAGES} n}

| {LINE linno PAGE page}

| {PAGE pagno page_properties} }

[INDEX idx].

Alternatives:

1. ... NUMBER OF {LINES|PAGES} n

2. ... LINE linno PAGE page

3. ... PAGE pagno page_properties

Addition:

... INDEX idx

Effect

This statement assigns the properties of a list stored in a list buffer to the variables n, page, or the variables

specified in page_properties.

System Fields

sy-subrcMeaning

0 The list property was successfully specified.

4 The line specified in linno or page specified in pagno cannot be found.

8 The list level specified in idx cannot be found.

Note

The statement DESCRIBE LIST should only be used for completed lists, because not all properties can be read in a

list during its creation process.

Addition

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... INDEX idx

Effect

The list level can be specified with the addition INDEX. A data object of the type i containing the list index is

expected for idx. The value of idx must be greater than or equal to 0. If the addition INDEX is not specified, 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 wastriggered (sy-listi) is selected during the processing of a list event. If the list level specified in idx does not exist,

the variables are not changed and sy-subrc is set to the value 8.

Alternative 1

... NUMBER OF {LINES|PAGES} n

Effect

The number of lines is expected when specifying LINES, the number of list pages is expected when specifying

PAGES. A data object of the type i is expected for n. The number of lines is counted from the first to the last line

described by an output statement and contains the page headers and page footers. The spaces automaticallyinserted between the list pages are not counted.

Alternative 2

... LINE linno PAGE page

Effect

The corresponding page for the line number specified in linno is determined and stored in page. Data objects of the

type i are expected for linno and page. If the line specified in linno does not exist, page is not changed and

sy-subrc is set to 4. The page header and page footers are included in the line count but not the spaces

automatically inserted between the list pages.

Alternative 3

... PAGE pagno page_properties

Effect

Various properties page_properties for the page number specified in pagno are determined and passed to the

specified variables. At least one addition must be specified after pagno. The data type i is expected for pagno. If

the page specified in pagno does not exist, the variables are not changed and sy-subrc is set to the value 4.

Example

Specification of properties of the list's last page that is currently displayed with two DESCRIBE statements during a

list event.

DATA: last_page TYPE i,

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lines TYPE i, first_line TYPE i, top_lines TYPE i.

...

AT LINE-SELECTION. DESCRIBE LIST: NUMBER OF PAGES last_page, PAGE last_page LINES lines FIRST-LINE first_line TOP-LINES top_lines.

ContinueDESCRIBE LIST - page_properties