how to call two class in wmi provider in c+++

See more:

C++

COM

I have create the wmi provider .
Its working fine.
i have two classes in that name as

cObject1, cObject2.


This is entry of my dll, if i create the object for cObject1 then cObject1 funcaiton are calling
That time i need to query the cObject1 object alone.

if want to call both the class at same time means wmi query if i did cObject2 also it suppose to query its own funcation and need to return the value.

STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{

}

For both class i am using single GUID
how to achieve that.