O

object
A programmable software component representing an instance of one or more defined interfaces. The objects exposed by the CDO libraries conform to the COM architecture and expose zero or more properties and zero or more methods.
object collection
See collection.
object renderer
A rendering object used to render one or more selected properties on a CDO object, rather than the entire object. CDO applications can access an object renderer using the ObjectRenderer object. See also container renderer.
OCX
(OLE Custom Controls) See ActiveX control.
OLE
A software technology built on the COM foundation and used for creating and working with compound documents. OLE objects commonly use the IStream and IStorage interfaces. See also ActiveX.
OLE Automation
See Automation.
OLE Messaging
See CDO.