Navigation: ABC Library Reference > BrowseClass > BrowseClass Methods >====== TakeVCRScroll (process a VCR scroll event)  ====== |    |
TakeVCRScroll( [vcrevent] ), VIRTUAL
| TakeVCRScroll | Processes a VCR scroll event for the browse list. |
| vcrevent | An integer constant, variable, EQUATE, or expression that specifies the scroll event. Valid scroll events are up one item, down one item, up one page, down one page, up to the first item, and down to the last item. If omitted, no scrolling occurs. |
The TakeVCRSroll method processes a VCR scroll event for the browse
Implementation:
A vcrevent value of VCR:Forward scrolls down one item; VCR:Backward scrolls up one item; VCR:PageForward scrolls down one page; VCR:PageBackward scrolls up one page; VCR:Last scrolls to the last list item; VCR:First scrolls to the first list item. Corresponding vcrevent EQUATEs are declared in \LIBSRC\ABTOOLBA.INC.
ITEMIZE,PRE(VCR)
Forward EQUATE(Toolbar:Down)
Backward EQUATE(Toolbar:Up)
PageForward EQUATE(Toolbar:PageDown)
PageBackward EQUATE(Toolbar:PageUp)
First EQUATE(Toolbar:Top)
Last EQUATE(Toolbar:Bottom)
Insert EQUATE(Toolbar:Insert)
None EQUATE(0)
END
The TakeVCRScroll method calls the TakeScroll method, translating the vcrevent to the appropriate scrollevent.
Example:
LOOP !process repeated scroll events
IF VCRRequest = VCR:None !if no more events
BREAK !break out of loop
ELSE !if scroll event
MyBrowse.TakeVCRScroll( VCRRequest ) !BrowseClass object handles it
END
END
See Also: TakeScroll