ShowCylindricalDlg example for C++ Builder

void __fastcall TForm1::ShowCylindricalDlg1Click(TObject *Sender) 
{
   L_INT nRet; 
   LEADDlgImgEffect1->DlgFlags = DLG_CYLINDRICAL_SHOW_PREVIEW |
                                 DLG_CYLINDRICAL_SHOW_TOOL_ZOOMLEVEL; 

   LEADDlgImgEffect1->LEADImage = LEADImage1; 
   nRet= LEADDlgImgEffect1->ShowCylindricalDlg ( this ); 
   if ( nRet == SUCCESS_DLG_OK ) 
   {
      LEADImage1->Cylindrical (LEADDlgImgEffect1->Value, 
                                LEADDlgImgEffect1->CylindricalType ); 
   }
}