unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}


type
  TRec = record    {定义结构 TRec}
    name: ShortString;
    age: Word;
    constructor Create(str: ShortString; w: Word); {构造函数}
  end;

{ TRec 构造函数实现}
constructor TRec.Create(str: ShortString; w: Word);
begin
  name := str;
  age := w;
end;



//使用结构
procedure TForm1.Button1Click(Sender: TObject);
var
  rec: TRec;
begin
  rec.Create('李四', 81);
  ShowMessage(rec.name); {李四}
end;

end.

结构的方法、属性都是在 Delphi 7 以后的版本中加入的, 非常类似与"类", 但又不如在"类"里完善;
它的其他一些新特性也好像是从"类"里搬过来的, 等在"类"里面研究吧.

posted on 2008-01-09 16:59  万一  阅读(3415)  评论(3编辑  收藏  举报