void __fastcall TForm1::Button3Click(TObject *Sender)
{
Query->Active = false;
Query->SQL->Text = "select * from imagenes where nombre_foto = 'foto.bmp''";
Query->Active = true;
std::auto_ptr<TMemoryStream> stream (new TMemoryStream);
Queryimage_field->SaveToStream(stream.get());
stream->Position = 0;
stream->SaveToFile("\\temp\\foto.bmp");
stream->Position = 0;
Image1->Picture->Bitmap->LoadFromStream(stream.get());
Query->Active = false;
}