Indicated to the caller if the device renderer needs additional structure
definition callbacks to identify how primitives are to be grouped to
possibly aid in client side event handling.
Notifies the structure definition listener of a change in the current
running structure that defines a group of primitives being rendered and
puts them into context with reference to the source object.
Notifies the structure definition listener of a change in the current
running structure that defines a group of primitives being rendered and
puts them into context with reference to the source object.