SelectedFamilyName example for C++ Builder

void __fastcall TForm1::Button3Click(TObject *Sender) 
{
 AnsiString strBuffer; 
 strBuffer= "Source Name = " + LEADTwain1->SelectedSourceName + "\n" +
          "Product Family Name = " + LEADTwain1->SelectedFamilyName + "\n" +
              "Manufacturer Name = " + LEADTwain1->SelectedManufacturerName + "\n";
 ShowMessage ( strBuffer ); 
}