A long expression that defines the width of the vertical scroll bar.
By default, the ScrollWidth property is -1. If the
ScrollWidth property is -1, the control uses the default width of the vertical
scroll bar from the system. Use the ScrollWidth property to specify the width
of the vertical scroll bar. Use the ScrollButtonHeight
property to specify the height of the buttons in the vertical scroll bar. Use
the ScrollPartVisible property to
specify the visible parts in the control's scroll bar. Use the ScrollThumbSize
property to define a fixed size for the scrollbar's thumb.
