unit1.pas

来自「很好地delphi书籍源码」· PAS 代码 · 共 58 行

unit Unit1;

interface

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

type
  TSchool=class
  public
   Name:string;
  end;
  THighSchool=class(TSchool)
  public
    ClassCounts:Word;
  end;

  TUniversity=class(TSchool)
    facultyCounts:word;
  end;
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button2Click(Sender: TObject);
var
  A:TUniversity;
begin
  A:=TUniversity.Create;
  A.Name:='海洋大学';
  Caption:=A.Name;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  A:THighSchool;
begin
  A:=THighSchool.Create;
  A.Name:='新华中学';
  Caption:=A.Name;
end;

end.