Obtaining Tune Requests from the Guide Store

This topic applies to Windows XP Home Edition and Windows XP Professional only.

A tune request contains all the information necessary for the Video Control to tune to a given channel or frequency. Tune requests are represented by objects such as IATSCChannelTuneRequest, IDVBTuneRequest, and ITuneRequest (for analog TV). Tune requests encapsulate all the details of tuning across various network types. Typically, an application will create an instance of the Guide Store, and then use the program data in the Guide Store to create a user interface showing the programs available. When the user selects a program to view, the application obtains the tune request associated with that program from the Guide Store, and simply passes it to the Video Control. For more information, see Guide Store and The Microsoft Unified Tuning Model.