Microsoft® Windows® Scripting with WMI: Self-Paced Learning Guide

104 Part II: WMI Queries and Events

Using SWbemEventSource

The SWbemEventSource object is used to retrieve events. Events are activities or occurrences

that happen on a computer system. A process starts—it generates an event. A service pauses—

it generates a different kind of event. A file is created, modified, deleted—all of which generate

events. You can receive these events by using an event query in conjunction with the ExecNo-

tificationQuery method of the SWbemServices object.

You get a

n SWbemEventSource object when you use the ExecNotificationQuery method to make

an event query. Once you execute the query, you have access to the Ne