我在用delphi编写opc客户端的时候，用SyncRead读写 procedure SyncRead(Source: Smallint; NumItems: Integer; var ServerHandles: PSafeArray; out Values: PSafeArray; out Errors: PSafeArray; out Qualities: OleVariant;out TimeStamps: OleVariant); -opcautomation_tlb.pas 我是这样编写的： procedure TForm1.Timer1Timer(Sender: TObject); var ServerHandles:PSafeArray; Values: PSafeArray; Errors:PSafeArray; Quarlities:OleVariant; TimeStamps:OleVariant; begin objTestGroup.SyncRead(OPCCache,1,ServerHandles,Values,Errors,Quarlities,TimeStamps); 出现了以下问题：“参数错误！” 请问邓老师是哪里除了问题？是不是我的变量定义的不对？