I've read the FAQ and I extended Winspool and WinspoolUtil to add PRINTER_INFO_2 support.

The code is here. It's based on the OP implementation for PRINTER_INFO_2.

You can test it with a simple:

for (PRINTER_INFO_2 printerInfo : WinspoolUtilExt.getPrinterInfo2()) {
    System.out.println(printerInfo.pPrinterName + ": " + printerInfo.pDriverName);
}

This methods could be easily added to Winspool and WinspoolUtil.