TButton上加图标的问题?
     btnNewStart:=TButton.Create;
  btnNewStart.Caption := '开始';
  NewImage := TPicture.create;
  NewImage.LoadFromFile('C:\Windows\Circles.BMP');
   
  
  OldBitmap := SendMessage(btnNewStart.Handle,
                           BM_SetImage, 0,
                           NewImage.Bitmap.Handle);
  ShowWindow(btnNewStart.handle,SW_SHOW);
  可总是显示不了图形,如何做,谢谢