-AddTransitionCommand::AddTransitionCommand(CustomTrackView *view, ItemInfo info, int transitiontrack, QDomElement params, bool remove, bool doIt) : m_view(view), m_info(info), m_track(transitiontrack), m_params(params), m_remove(remove), m_doIt(doIt) {
+AddTransitionCommand::AddTransitionCommand(CustomTrackView *view, ItemInfo info, int transitiontrack, QDomElement params, bool remove, bool doIt, QUndoCommand * parent) : QUndoCommand(parent), m_view(view), m_info(info), m_track(transitiontrack), m_params(params), m_remove(remove), m_doIt(doIt) {