The IDLffXMLDOMNode::GetPreviousSibling function method creates an instance of one of the IDLffXMLDOMNode subclasses and returns an object reference to that object, which refers to the previous sibling of the calling node in the DOM tree. The type of the object corresponds to the type of the previous sibling node.
Result = Obj->[IDLffXMLDOMNode::]GetPreviousSibling()
Returns an object reference to the new IDLffXMLDOMNode subclass object if there is a previous sibling in the DOM tree. If there is no sibling, a null object reference is returned.