摘要：unit Unit4;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TEnum = (One, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten); TSetEnum = set of TEnum; TForm4 = class(TForm) GroupBox1: TGroupBox; Button1: TButton; Button2: TButton; Gro 阅读全文