Generics in Record

[mkinzler]

Versuch es mal mit Klassen. So scheint es zu gehen

Delphi-Quellcode:

unit GTU;

interface

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

type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

TRecObj<T> = class
type
  //PRec = ^TRec;
  TRec = class
    ID: integer;
    Data: T;
  end;
private
  FRec: TRec;
public
  constructor Create(ID: integer; Data: T);
  destructor Destroy; reintroduce;
end;

var
  Form1: TForm1;
  myObj: TRecObj<string>;

implementation

{$R *.dfm}

constructor TRecObj<T>.Create(ID: integer; Data: T);
begin
  inherited Create;
  FRec := TRec.Create;
  FRec.ID := ID;
  FRec.Data := Data; // schmeißt AV
end;

destructor TRecObj<T>.Destroy;
begin
  FRec.Destroy;
  inherited Destroy;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
    myObj := TRecObj<string>.Create(-17, 'Hallo');
    Caption := myObj.FRec.Data;
end;

end.