IRTCSessionStateChangeEvent2
The IRTCSessionStateChangeEvent2 interface contains additional properties related to session state change events. These methods extend the functionality provided by the IRTCSessionStateChangeEvent interface.
When the application's implementation of the IRTCEventNotification::Event method indicates an RTC_EVENT of type RTCE_SESSION_STATE_CHANGE, the method's pEvent parameter is an IDispatch pointer for the IRTCSessionStateChangeEvent interface. To retrieve the IRTCSessionStateChangeEvent2 interface, call QueryInterface on the IRTCSessionStateChangeEvent interface, passing the appropriate IID (4F933171-6F95-4880-80D9-2EC8D495D261).
Methods in Vtable Order
The IRTCSessionStateChangeEvent2 interface inherits the methods of the standard COM interface IUnknown.
In addition, IRTCSessionStateChangeEvent2 defines the following methods, including those inherited from IRTCSessionStateChangeEvent.
| Method | Description |
|---|---|
| get_MediaTypes | Returns the media types that are available on the incoming call. This method should be called only on RTCST_PC_TO_PC sessions in the RTCSS_INCOMING state. |
| get_RemotePreferredSecurityLevel | Returns the security level for the audio/video or T120 media stream encryption. |
| get_IsForked | Returns whether the session has been sent to multiple devices. This method may be called only on a session in the RTCSS_INCOMING state. |
| GetRemoteSessionDescription | Retrieves the session description from the remote client. |
Requirements
Redistributable: Requires Rtcdll.dll on Windows 2000, Windows XP, and Windows Server 2003.
Header: Declared in Rtccore.h.
Library: Included as a resource in Rtcdll.dll.
GUID: IID_IRTCSessionStateChangeEvent2 is defined as 4F933171-6F95-4880-80D9-2EC8D495D261.