Navigation: ABC Library Reference > BrowseClass > BrowseClass Methods >====== Fetch (get a page of browse items)  ====== |    |
Fetch( direction ), VIRTUAL, PROTECTED
| Fetch | Loads a page of items into the browse list queue. |
| direction | A numeric constant, variable, EQUATE, or expression that indicates whether to get the next set of items or the previous set of items. |
The Fetch method loads the next or previous page of items into the browse list queue.
Implementation:
Fetch is called by the ResetQueue, ScrollOne, ScrollPage, and ScrollEnd methods. A page of items is as many items as fits in the LIST control.
BrowseClass.Fetch direction value EQUATEs are declared in ABBROWSE.INC as follows:
FillBackward EQUATE(1)
FillForward EQUATE(2)
Example:
ScrollOne PROCEDURE(SIGNED Event)
CODE
IF Event = Event:ScrollUp AND CurrentChoice > 1
CurrentChoice -= 1
ELSIF Event = Event:ScrollDown AND CurrentChoice <; RECORDS(ListQueue)
CurrentChoice += 1
ELSE
ItemsToFill = 1
MyBrowse.Fetch( CHOOSE( Event = EVENT:ScrollUp, FillForward, FillBackward ) )
END
See Also: ResetQueue, ScrollOne, ScrollPage, ScrollEnd