error C2065: 'KSDEVICE' : undeclared identifier？？

VC6 + Win2kDDk + DriverStudio3.1,直接编译DriverWorks里面的例子：
C:\Program Files\Compuware\DriverStudio\DriverWorks\Examples\wdm\avstream\vcap

出现以下错误：
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(48) : error C2065: 'KSDEVICE' : undeclared identifier
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(49) : error C2990: 'KsTypeHelper' : non-template class has already been defined as a template class
        C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(45) : see declaration of 'KsTypeHelper'
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(53) : error C2065: 'KSFILTERFACTORY' : undeclared identifier
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(54) : error C2990: 'KsTypeHelper' : non-template class has already been defined as a template class
        C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(45) : see declaration of 'KsTypeHelper'
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(58) : error C2065: 'KSFILTER' : undeclared identifier
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(59) : error C2990: 'KsTypeHelper' : non-template class has already been defined as a template class
        C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(45) : see declaration of 'KsTypeHelper'
C:\PROGRA~1\Compuware\DriverStudio\DriverWorks\include\.\avstream\KsObject.h(63) : error C2065: 'KSPIN' : undeclared identifier

还有很多，类似的错误。
是什么原因？
其他例子都可以编译，就AVStream下面的两个例子不能编译，都是这样的错误，请高手指点！

原因似乎是我的win2k ddk里面带的directx版本太低(7.0)？？
这个版本的ddk的ks.h里面确实没有KSDEVICE等的定义。

已经解决了