* Electron version: 1.4.5
* Operating system: All

1- There are only 2 options when it comes to print: silent and printBackground, there are plenty more options, like margins, copies, etc in the print window (Ctrl+P), that could be sent using _webContents.print()_ 

2- Access to print queue, to know if the printer is printing

shell/browser/api/atom_api_web_contents.cc
}
  options.Get("silent", &silent);
  options.Get("printBackground", &print_background);
  if (options.Get("deviceName", &device_name) && !device_name.empty()) {
    settings.SetString(printing::kSettingDeviceName, device_name);
  }
  auto* print_view_manager =
      printing::PrintViewManagerBasic::FromWebContents(web_contents());
  auto* focused_frame = web_contents()->GetFocusedFrame();
  auto* rfh = focused_frame && focused_frame->HasSelection()
                  ? focused_frame
                  : web_contents()->GetMainFrame();
  print_view_manager->PrintNow(
      rfh,
      std::make_unique<PrintMsg_PrintPages>(rfh->GetRoutingID(), silent,
                                            print_background, settings),
      std::move(callback));
}
std::vector<printing::PrinterBasicInfo> WebContents::GetPrinterList() {
  std::vector<printing::PrinterBasicInfo> printers;
  auto print_backend = printing::PrintBackend::CreateInstance(nullptr);
  {
    
    
    base::ThreadRestrictions::ScopedAllowIO allow_io;
    print_backend->EnumeratePrinters(&printers);
  }
  return printers;
}
v8::Local<v8::Promise> WebContents::PrintToPDF(