Platform-Defined Endpoints 

In the WindowsSideShow.h header file, the Windows SideShow platform defines the GUIDs for its well-known, pre-defined endpoints that Windows SideShow gadgets may use as the value of the in_endpointId parameter of the ISideShowSession::RegisterContent Method of the ISideShowSession interface.

The following table shows the endpoints that are pre-defined by the Windows SideShow platform:

Pre-defined endpoint



Identifies the XML endpoint format defined to standardize the communication of simple text and image pages between Windows SideShow gadgets and the devices to which they are connected.

For more information about this format, see Simple Content Format Schema Reference.


Identifies the iCalendar format, where each content item contains a calendaring event in iCalendar format.