Method MoveUp

libraries/lib-track/Track.cpp:741–749

}

bool TrackList::MoveUp(Track &t)
{
   Track *p = GetPrev(t, true);
   if (p) {
      SwapNodes(p->GetNode(), t.GetNode());
      return true;
   }
   return false;
}

bool TrackList::MoveDown(Track &t)
{