Scroller(3I)						    InterViews Reference Manual 					      Scroller(3I)

NAME

       Scroller, HScroller, VScroller - scrolling an interactor

SYNOPSIS

       #include <InterViews/scroller.h>

DESCRIPTION

       A  scroller is an interactor that manipulates the perspective of another interactor.  It contains a bar whose position and size reflect the
       current origin and size in the interactor's perspective.  Clicking and dragging in the scroller modifies the attached interactor's perspec-
       tive.  VScroller is a class for defining vertical scrollers, HScroller for horizontal scrollers.

PUBLIC OPERATIONS

       HScroller(Interactor*, int size = 0)
       VScroller(Interactor*, int size = 0)
	      Create  a  scroller of a given size (height for a horizontal scroller, width for a vertical scroller).  A zero size means to use the
	      default size.

       virtual void Update()
	      Redisplay the scroller to reflect a change in the interactor's perspective.

X DEFAULTS

       The ``syncScroll'' resource specifies whether the scroller should work in real-time or not.  When synchronized scrolling  is  employed  the
       interactor  scrolls  synchronously as the scroller's bar is dragged; otherwise the bar's outline follows the mouse during dragging, and the
       interactor is scrolled only after the user stops dragging the bar.  Scrollers will scroll synchronously if their syncScroll resource is set
       to  ``on''  or  ``true.''   The	state of the syncScroll attribute can be toggled temporarily by holding down the ``control'' key while the
       scroller is manipulated.

SEE ALSO

       Interactor(3I), Perspective(3I)

InterViews							   15 June 1987 						      Scroller(3I)