class Dispatcher;
class Parameters;
class InterfaceItem;
+class GroupScene;
using namespace std;
using namespace Qt;
void prepareChange();
+ inline GroupScene* getScene() { return (GroupScene*)(scene()); }
inline InterfaceItem* getToInterfaceItem(){ return toInterfaceItem; }
inline void setToInterfaceItem(InterfaceItem *iface){ toInterfaceItem = iface; }
inline InterfaceItem* getFromInterfaceItem(){ return fromInterfaceItem; }