谦虚求教，放分求教。

NTSTATUS
  IoGetDeviceObjectPointer(
  IN PUNICODE_STRING  ObjectName,
  IN ACCESS_MASK  DesiredAccess,
  OUT PFILE_OBJECT  *FileObject,
  OUT PDEVICE_OBJECT  *DeviceObject
  );
函数中，ObjectName是不是NTSTATUS
  IoCreateDevice(
  IN PDRIVER_OBJECT  DriverObject,
  IN ULONG  DeviceExtensionSize,
  IN PUNICODE_STRING  DeviceName  OPTIONAL,
  IN DEVICE_TYPE  DeviceType,
  IN ULONG  DeviceCharacteristics,
  IN BOOLEAN  Exclusive,
  OUT PDEVICE_OBJECT  *DeviceObject
  );
函数的DeviceName  呢？？？？？？？？？？？？？？

yes