为何在passthru中加入RtlInitUnicodeString、IoCreateDevice等编译不过

我想在passthru中加入和应用程序通信的代码，仿照packet中的加入IoCreateDevice等代码，但是编译不过,如下：
assthru.c(81) : error C4013: 'RtlInitUnicodeString' undefined; assuming extern returning int
passthru.c(83) : error C4013: 'IoCreateDevice' undefined; assuming extern returning int
我包含了ntddk.h头文件啊，是版本问题吗，敬请指点 :P

[编辑 -  9/19/04 by  birdtomaster]

define in wdm.h or ntddk.h
这两个中都有定义，试一试wdm.h

define in wdm.h or ntddk.h
这两个中都有定义，试一试wdm.h

#include "iocontrol.h"
#include "ntddk.h"
#include "wdm.h"
#include "ndis.h"
#include "stdio.h"
...

driverentry()...

NTSTATUS Status = STATUS_SUCCESS;
WCHAR deviceNameBuffer[] = L"\Device\passthru";
WCHAR deviceLinkBuffer[] = L"\DosDevices\passthru";
UNICODE_STRING ntDeviceName;
UNICODE_STRING win32DeviceName;
BOOLEAN fSymbolicLink = FALSE;
PDEVICE_OBJECT deviceObject;


NdisInitUnicodeString( &ntDeviceName, deviceNameBuffer);

Status = IoCreateDevice (DriverObject,
0, &ntDeviceName,
FILE_DEVICE_PASSTHRU,
0,
TRUE,
&deviceObject);
用NdisInitUnicodeString行，用RtlInitUnicodeString就不行，但是IoCreateDevice始终显示是没有定义函数，还有几个也这样，ddk帮助文档里面好像说NDIS里面不能用IoCreateDevice，NDIS drivers should never call IoCreateDevice or IoCreateSymbolicLink. Instead, if an NDIS driver must create a device object, it should call NdisMRegisterDevice.

但是packet例程里面就用了，没有问题啊？

我也遇到到相同的问题