nterface
 
type
 
  IcaAutoFree = interface
  ['{FEC11200-4C4E-49D7-9F9F-C7178A687DA4}']
    // Property methods
    function GetInstance: Pointer;
    // Properties
    property Instance: Pointer read GetInstance;
  end;
 
  TcaAutoFree = class(TInterfacedObject, IcaAutoFree)
  private
    // Private fields
    FInstance: TObject;
    // Property methods
    function GetInstance: Pointer;
  public
    constructor Create(AInstance: TObject);
    destructor Destroy; override;
  end;
 
function Auto(AInstance: TObject): IcaAutoFree;
 
implementation
 
constructor TcaAutoFree.Create(AInstance: TObject);
begin
  inherited Create;
  FInstance := AInstance;
end;
 
destructor TcaAutoFree.Destroy;
begin
  FInstance.Free;
  inherited;
end;
 
  // Property methods
 
function TcaAutoFree.GetInstance: Pointer;
begin
  Result := FInstance;
end;
 
function Auto(AInstance: TObject): IcaAutoFree;
begin
  Result := TcaAutoFree.Create(AInstance);
end;