function AddItem(OPCGroup: string; OPCItem: string; Comp: TdOPCControl; PropName: string; ArrayPos: integer = -1): TdGUIItem; virtual; overload;

virtual __fastcall TdGUIItem AddItem(AnsiString OPCGroup, AnsiString OPCItem, TdOPCControl Comp, AnsiString PropName, int ArrayPos = -1);