ABAP_ALTERNATIVES: 1 ... NUMBER OF ${LINES$|PAGES$} n 2 ... LINE linno PAGE page 3 ... PAGE pagno page_properties
ABAP Addition ... • idx
What does it do? 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 0The list property was successfully specified. 4The line specified in linno or page specified in pagno cannot be found. 8The list level specified in idx cannot be found.
Latest notes: The statement DESCRIBE LIST should only be used for completed lists, because not all properties of a list can be read when it is being created. ABAP_HINT_END • • DESCRIBE LIST
ABAP Addition
What does it do? The list level can be specified with the addition •, where idx expects a data object of type i, which contains the list index. The value of idx must be greater than or equal to 0. If the addition • is not specified, the list level 0 (the basic list itself) is selected when the basic list is created and the list level at which the event was raised (sy-listi) is selected when a list event is processed. If the list level specified in idx does not exist, the variables are not changed and sy-subrc is set to the value 8. • NUMBER OF LINES DESCRIBE LIST • NUMBER OF PAGES DESCRIBE LIST
ABAP Alternative 1 ... NUMBER OF ${LINES$|PAGES$} n
What does it do? If specified, LINES expects the number of lines, PAGES expects the number of pages in the list stored in n. n expects a data object of the type i. 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 blank lines inserted automatically between the list pages are not counted. • LINE PAGE DESCRIBE LIST
ABAP Alternative 2 ... LINE linno PAGE page
What does it do? The corresponding page for the line number specified in linno is determined and stored in page. linno and page expect data objects of the type i. If the line specified in linno does not exist, page is not changed and sy-subrc is set to 4. The page headers and page footers are respected in the line count, but not the blank lines inserted automatically between the list pages. • PAGE DESCRIBE LIST
ABAP Alternative 3 ... PAGE pagno page_properties
What does it do? 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. pagno expects the data type i. If the page specified in pagno does not exist, the variables are not changed and sy-subrc is set to the value 4.
Example ABAP Coding
Determines some properties of the last page of the list currently displayed using two DESCRIBE statements in a list event. ABEXA 00228 ABAP_EXAMPLE_END
