How delete the WSD port after delete the printer

Hi , I'm programming a setup fot install/uninstall a WSD printer , I have
discovered it and associate it with Function Discovery and PNP-X with success
, The PNP-X will create a entry in his database , then PnP will install the
driver and WSDMon creates the WSD port for my WSD printer , but when I use
method delete in the PNP-X , the printer icon can't be deleted , also for the
WSD port . I found that I must reboot my PC for delete them . So I want to
know it's possible to do that manually in my program without rebooting the
printer ? Which Windows API I should use for that ?

Thanks very much