type
  TByteArray = array of Byte;
  PByteArray = ^TByteArray;

var
  B: PByteArray;

begin
  new(b);

  setlength(B^, 100 + 1);

  B^[10] := 255;

  writeln(B^[10]);

  dispose(B);
  readln;
end.

procedure SaveBitmap32AsTGAFile(bmp32: TBitmap32; TGAFileName: String);
var
  fs: TFileStream;
  tgaHeader : TTGAFileHeader;
  DataArray: Array of DWORD;
  DataSize, n: DWORD;
begin
  ZeroMemory(@tgaHeader, sizeof(tgaHeader));
  tgaHeader.imagetype := 2;
  tgaHeader.width := bmp32.Width;
  tgaHeader.height := bmp32.Height;
  tgaHeader.pixeldepth := $20; // 32 Bit
  tgaHeader.descriptor := $08; // Bits 00001000 = 8 = $08

  DataSize := bmp32.Width * bmp32.Height;
  SetLength(DataArray, DataSize - 1);

  ZeroMemory(@DataArray, sizeof(DataArray));

  // Swap Bitmap top / bottom

  // >>--> AV / Berechsüberprüfung
  for n := bmp32.Width * bmp32.Height-1 downto 0 do
    DataArray[n] := bmp32.bits^[n];
  // <--<<

  fs := TFilestream.Create(TGAFileName, fmCreate);
  try
    fs.Seek(soFromBeginning, 0);
    fs.Write(tgaHeader, SizeOf(tgaHeader));
    fs.Write(DataArray[0], DataSize);
  finally
    FreeAndNil(fs);
  end;

  SetLength(DataArray, 0);
end;