- virtual void receiveBacklog(BufferId bufferId, MsgId first, MsgId last, int limit, int additional, QVariantList msgs);
- virtual void receiveBacklogAll(MsgId first, MsgId last, int limit, int additional, QVariantList msgs);
+ virtual QVariantList requestBacklog(BufferId bufferId, MsgId first = -1, MsgId last = -1, int limit = -1, int additional = 0);
+ virtual void receiveBacklog(BufferId bufferId, MsgId first, MsgId last, int limit, int additional, QVariantList msgs);
+ virtual void receiveBacklogAll(MsgId first, MsgId last, int limit, int additional, QVariantList msgs);