ListBox is a control containing text elements that can be selected by
user input. The elements are text strings displayed in a column. Elements
can also be added or removed using the attached Edit Box. The ListBox
is also part of a ComboBox. However, there are separate functions for
the ComboBox type. Elements in a ListBox are identified by a zero-based
identification number. The number corresponds to the order, from top
to bottom, in which they appear in the list.