Syntax
TOP-OF-PAGE [DURING LINE-SELECTION].
Addition:
... DURING LINE-SELECTION
Effect
This statement defines an event block whose event is triggered by the ABAP runtime environment during the creation of a list. This occurs when a new page is started - that is, immediately before the first line in a new page is to be output. All list outputs that take place in the event block are placed below the standard page header of the list. You cannot output more lines than are available in the page within the event block. The NEW-PAGE statement is ignored within this event block.
The entire output written to the list in the event block belongs to the page header of the current list page. The top page header cannot be moved when you scroll vertically in a list displayed on the screen.
For each TOP-OF-PAGE event, the placeholders "&1" - "&9" are replaced with the contents of system fields sy-tvar0 - sy-tvar9 in the standard heading and the column headings of the standard page header during creation of a basic list. You can assign values to these system fields in the program.
Addition
... DURING LINE-SELECTION
Effect
If you do not use an addition, an event block is triggered for event TOP-OF-PAGE during the creation of a basic list. If you use the addition DURING LINE-SELECTION, an event block is triggered for the corresponding events during the creation of details lists. You have to use system fields like sy-lsind to distinguish between the individual details lists.
Bluesky
