ShowCylindricalDlg example for Delphi

procedure TForm1.ShowCylindricalDlg1Click(Sender: TObject); 
var
   nRet: L_INT; 
begin
   LEADDlgImgEffect1.DlgFlags:= DLG_CYLINDRICAL_SHOW_PREVIEW Or
                                 DLG_CYLINDRICAL_SHOW_TOOL_ZOOMLEVEL; 

   LEADDlgImgEffect1.LEADImage:= LEADImage1; 
   nRet:= LEADDlgImgEffect1.ShowCylindricalDlg ( Self ); 
   if ( nRet = SUCCESS_DLG_OK ) then
   begin
      LEADImage1.Cylindrical (LEADDlgImgEffect1.Value, 
                               LEADDlgImgEffect1.CylindricalType ); 
   end; 
end;