yy::IChannelUserList 成员列表

成员的完整列表，这些成员属于 yy::IChannelUserList,包括所有继承而来的类成员

GetUserCount(unsigned int cid, unsigned int *count)=0	yy::IChannelUserList	pure virtual
GetUserList(unsigned int cid, unsigned int index, IUserItem **list)=0	yy::IChannelUserList	pure virtual