public interface IVerticallyScrollablePublic Interface IVerticallyScrollable| OffsetY | Vertical offset. |
| VerticalDocumentDimension | Height of the document. |
| VerticalScrollBarArea | Gets the drawing are of the scrollbar. |
| VerticalViewDimension | Height of the view area. |
| GetScrollbarBackground | Draws the background of the scrollbar on a graphics object. |
| RedrawControl | Redraws the parent control. |