DS中的driverentry的参数怎么比实力要多阿？

UsbDevice * pDevice = new (
static_cast<PCWSTR>(KUnitizedName(L\"UsbDevice\", m_Unit)),
FILE_DEVICE_UNKNOWN,
NULL,
0,
DO_DIRECT_IO
| DO_POWER_PAGABLE
)
UsbDevice(Pdo, m_Unit);

而且实例中没有
void Usb::LoadRegistryParameters(KRegistryKey &Params)
{

m_bBreakOnEntry = FALSE;
Params.QueryValue(L\"BreakOnEntry\", &m_bBreakOnEntry);
t << \"m_bBreakOnEntry loaded from registry, resulting value: [\" << m_bBreakOnEntry << \"]\\n\";

}