Microsoft Office 2000/Visual Basic Programmer's Guide

Creating Object Properties

The Property Set procedure behaves like the Property Let procedure, except that you use it to assign an object reference to an object property. You can then use a corresponding Property Get procedure to return the object reference.

There are a couple of cases in which it's useful to create an object property. When you want to create a new object that provides all the properties, methods, and events of an existing object, plus additional ones that you've defined, you can create an object property that returns a reference to the existing object. In addition, when you create an object model that has a hierarchy — the object contains other objects or collections — you must create an object property in order to access a lower-level object in the hierarchy.