成员的完整列表，这些成员属于 JCSDK.JCMediaChannel.JCMediaChannelCallback,包括所有继承而来的类成员

OnGenerateRoomIdResult(bool succ, int operationId, string roomId)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnInviteSipUserResult(int operationId, bool result, int reason, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnJoin(bool result, JCMediaChannelReason reason, string channelId, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnLeave(JCMediaChannelReason reason, string channelId, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnMediaChannelPropertyChange(JCMediaChannel.PropChangeParam propChangeParam, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnMediaChannelStateChange(JCMediaChannelState state, JCMediaChannelState oldState, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnMessageReceive(string type, string content, string fromUserId, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnParticipantJoin(JCMediaChannelParticipant participant, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnParticipantLeft(JCMediaChannelParticipant participant, JCMediaChannelReason reason, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnParticipantUpdate(JCMediaChannelParticipant participant, JCMediaChannelParticipant.ChangeParam changeParam, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnQuery(int operationId, bool result, JCMediaChannelReason reason, JCMediaChannelQueryInfo queryInfo, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback
OnStop(bool result, JCMediaChannelReason reason, JCMediaChannel obj)	JCSDK.JCMediaChannel.JCMediaChannelCallback