Indicates whether a horizontal scroll bar appears in an editor or a selection list.
Data type: LOGICAL
Access: Readable/Writeable
Applies to: EDITOR widget, SELECTION-LIST widget
If the SCROLLBAR-HORIZONTAL attribute is TRUE, a horizontal scroll bar appears on the bottom edge of the widget. For an editor widget, horizontal scrolling is always enabled whether or not a horizontal scroll bar is enabled. For a selection list, the scroll bar must be enabled to scroll the list. The default value is FALSE.
You can set this attribute only before the widget is realized.