여기 Q&A에서 자료를 찾아서 실행해보고 있는데 다음과 같은 에러가 납니다.
[C++ Error] GR32_Transforms.hpp(440): E2109 Not an allowed type

소스코드는 다음과 같습니다.
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
#include "GR32_Transforms.hpp"

//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "GR32_Image"
//#pragma link "GR32_Image"
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::TrackBar1Change(TObject *Sender)
{
    int nWidth = img32Src->Width;
    int nHeight = img32Src->Height;

    img32Dst->Bitmap->Width = nWidth;
    img32Dst->Bitmap->Height = nHeight;

    TAffineTransformation *pT = new TAffineTransformation();

    pT->SrcRect = FloatRect((float)0, (float)0, (float)nWidth, (float)nHeight);
    pT->Rotate(nWidth/2, nHeight/2, TrackBar1->Position);
    img32Dst->BeginUpdate();
      img32Dst->Bitmap->Clear(clGray32);
      Transform(img32Dst->Bitmap, img32Src->Bitmap, pT);
      img32Dst->EndUpdate();
      img32Dst->Repaint();
      delete pT;
}

FloatRect()에서 에러가 나는데 이유를 잘 모르겠어요. 좀 도와 주세요