unit1.pas

《Kylix程序设计》一书中附带的例程源代码

unit Unit1;

interface

uses
  SysUtils, Types, Classes, Variants, QGraphics, QControls, QForms, QDialogs,
  QStdCtrls;

type
{
  TBase = class
//  protected
  private
    FB: Integer;
  public
    procedure SetBase( B: Integer );
    function GetBase(): Integer;
  end;

  TDerived = class( TBase )
//  protected
  private
    FD: Integer;
  public
    procedure SetDerived( D: Integer ); overload;
    procedure SetDerived( B, D: Integer ); overload;
    function GetDerived(): Integer;
  end;
}

  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses Base, Derived;

{$R *.xfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  De: TDerived;
begin
  De := TDerived.Create();
//  De.FD := 100;
//  De.FB := 100;
//  De.SetBase( 100 );
  De.SetDerived( 100 );
  Button1.Caption := IntToStr( De.GetBase() );
end;

end.