HRESULT
CMyDevice::QueryInterface(
_In_ REFIID InterfaceId,
_Outptr_ PVOID *Object
)
/*++
Routine Description:
This method is called to get a pointer to one of the object's callback
interfaces.
Since the skeleton driver doesn't support any of the device events, this
method simply calls the base class's BaseQueryInterface.
If the skeleton is extended to include device event interfaces then this
method must be changed to check the IID and return pointers to them as
appropriate.
Arguments:
InterfaceId - the interface being requested
Object - a location to store the interface pointer if successful
Return Value:
S_OK or E_NOINTERFACE
--*/
{
HRESULT hr;
if (IsEqualIID(InterfaceId, __uuidof(IPnpCallbackHardware)))
{
*Object = QueryIPnpCallbackHardware();
hr = S_OK;
}
else if (IsEqualIID(InterfaceId, __uuidof(IPnpCallback)))
{
*Object = QueryIPnpCallback();
hr = S_OK;
}
else if (IsEqualIID(InterfaceId, __uuidof(IRequestCallbackRequestCompletion)))
{
*Object = QueryIRequestCallbackRequestCompletion();
hr = S_OK;
}
else
{
hr = CUnknown::QueryInterface(InterfaceId, Object);
}
return hr;
}
HRESULT
STDMETHODCALLTYPE
CMyReadWriteQueue::QueryInterface(
__in REFIID InterfaceId,
__deref_out PVOID *Object
)
/*++
Routine Description:
Query Interface
Aruments:
Follows COM specifications
Return Value:
HRESULT indicatin success or failure
--*/
{
HRESULT hr;
if (IsEqualIID(InterfaceId, __uuidof(IQueueCallbackWrite)))
{
hr = S_OK;
*Object = QueryIQueueCallbackWrite();
}
else if (IsEqualIID(InterfaceId, __uuidof(IQueueCallbackRead)))
{
hr = S_OK;
*Object = QueryIQueueCallbackRead();
}
else if (IsEqualIID(InterfaceId, __uuidof(IRequestCallbackRequestCompletion)))
{
hr = S_OK;
*Object = QueryIRequestCallbackRequestCompletion();
}
else if (IsEqualIID(InterfaceId, __uuidof(IQueueCallbackIoStop)))
{
hr = S_OK;
*Object = QueryIQueueCallbackIoStop();
}
else
{
hr = CMyQueue::QueryInterface(InterfaceId, Object);
}
return hr;
}
HRESULT
CMyRemoteTarget::QueryInterface(
_In_ REFIID InterfaceId,
_Out_ PVOID * Object
)
/*++
Routine Description:
This method is called to get a pointer to one of the object's callback
interfaces.
Arguments:
InterfaceId - the interface being requested
Object - a location to store the interface pointer if successful
Return Value:
S_OK or E_NOINTERFACE
--*/
{
HRESULT hr;
if(IsEqualIID(InterfaceId, __uuidof(IRequestCallbackRequestCompletion)))
{
*Object = QueryIRequestCallbackRequestCompletion();
hr = S_OK;
}
else if(IsEqualIID(InterfaceId, __uuidof(IRemoteTargetCallbackRemoval)))
{
*Object = QueryIRemoteTargetCallbackRemoval();
hr = S_OK;
}
else if(IsEqualIID(InterfaceId, __uuidof(IObjectCleanup)))
{
*Object = QueryIObjectCleanup();
hr = S_OK;
}
else
{
hr = CUnknown::QueryInterface(InterfaceId, Object);
}
return hr;
}
