Inherits from ListBoxBase.
Implements a simple text based list that supports multiple selection. ListBox and ListBoxMulti are separate because several mechanics are drastically different when multiple selection is available and can lead to bugs in user code because of interfaces changing their behavior dynamically.
No new properties exist on ListBoxMulti. See inherited properties from ListBoxBase.
Deselect(aItem: ListBoxItem): void
Select(aItem: ListBoxItem): void
Use the control key to multi select.