????????Google Books APIs????ISBN??????????????????
??????TCameraComponent?ZXing?????????????????ISBN? ????????Google Books APIs????????????
DB????????????????????????
Google Books APIs?ISBN???????????????????TRESTRequest?TRESTClie nt?TRESTResponse????????????
??????????UI???TEdit,TLabel,TMemo,TImage??Google Books APIs???????????TRESTRequest?TRESTClient?TRESTRespo nse?TIdHTTP???????