199 lines
3 KiB
C++
199 lines
3 KiB
C++
|
/*++
|
|||
|
|
|
|||
|
|
Copyright (C) Microsoft Corporation, 1997 - 1999
|
|||
|
|
|
|||
|
|
Module Name:
|
|||
|
|
|
|||
|
|
cfacchng.cxx
|
|||
|
|
|
|||
|
|
Abstract:
|
|||
|
|
|
|||
|
|
Implements the Class Factory for the SENS IEventObjectChange Subscriber.
|
|||
|
|
|
|||
|
|
Author:
|
|||
|
|
|
|||
|
|
Gopal Parupudi <GopalP>
|
|||
|
|
|
|||
|
|
[Notes:]
|
|||
|
|
|
|||
|
|
optional-notes
|
|||
|
|
|
|||
|
|
Revision History:
|
|||
|
|
|
|||
|
|
GopalP 11/17/1997 Start.
|
|||
|
|
|
|||
|
|
--*/
|
|||
|
|
|
|||
|
|
#include <precomp.hxx>
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Global counts for the number of objects in the server and the number of
|
|||
|
|
// locks.
|
|||
|
|
//
|
|||
|
|
|
|||
|
|
ULONG g_cCFObj = 0L;
|
|||
|
|
ULONG g_cCFLock = 0L;
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Constructor and Destructor
|
|||
|
|
//
|
|||
|
|
CIEventObjectChangeCF::CIEventObjectChangeCF(
|
|||
|
|
void
|
|||
|
|
) : m_cRef(1L)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
CIEventObjectChangeCF::~CIEventObjectChangeCF(
|
|||
|
|
void
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
// Empty Destructor.
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// QI
|
|||
|
|
//
|
|||
|
|
STDMETHODIMP
|
|||
|
|
CIEventObjectChangeCF::QueryInterface(
|
|||
|
|
REFIID riid,
|
|||
|
|
LPVOID *ppv
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
HRESULT hr = S_OK;
|
|||
|
|
|
|||
|
|
*ppv = NULL; // To handle failure cases
|
|||
|
|
|
|||
|
|
// IUnknown or IClassFactory
|
|||
|
|
if (IsEqualIID(riid, IID_IUnknown) ||
|
|||
|
|
IsEqualIID(riid, IID_IClassFactory))
|
|||
|
|
{
|
|||
|
|
*ppv = (LPUNKNOWN) this;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
hr = E_NOINTERFACE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (NULL != *ppv)
|
|||
|
|
{
|
|||
|
|
((LPUNKNOWN)*ppv)->AddRef();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return hr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// AddRef
|
|||
|
|
//
|
|||
|
|
STDMETHODIMP_(ULONG)
|
|||
|
|
CIEventObjectChangeCF::AddRef(
|
|||
|
|
void
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
return InterlockedIncrement((PLONG) &m_cRef);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Release
|
|||
|
|
//
|
|||
|
|
STDMETHODIMP_(ULONG)
|
|||
|
|
CIEventObjectChangeCF::Release(
|
|||
|
|
void
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
ULONG cRefT;
|
|||
|
|
|
|||
|
|
cRefT = InterlockedDecrement((PLONG) &m_cRef);
|
|||
|
|
|
|||
|
|
if (0 == m_cRef)
|
|||
|
|
{
|
|||
|
|
// Invoke the callback function.
|
|||
|
|
delete this;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return cRefT;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// CreateInstance
|
|||
|
|
//
|
|||
|
|
STDMETHODIMP
|
|||
|
|
CIEventObjectChangeCF::CreateInstance(
|
|||
|
|
LPUNKNOWN pUnkOuter,
|
|||
|
|
REFIID riid,
|
|||
|
|
LPVOID *ppvObj
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
LPCIMPIEVENTOBJECTCHANGE pObjChange;
|
|||
|
|
HRESULT hr;
|
|||
|
|
|
|||
|
|
DebugTraceGuid("CIEventObjectChangeCF:CreateInstance()", riid);
|
|||
|
|
|
|||
|
|
hr = E_OUTOFMEMORY;
|
|||
|
|
*ppvObj = NULL;
|
|||
|
|
pObjChange = NULL;
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Return the appropriate interface pointer.
|
|||
|
|
//
|
|||
|
|
if (IsEqualIID(riid, IID_IEventObjectChange) ||
|
|||
|
|
IsEqualIID(riid, IID_IUnknown))
|
|||
|
|
{
|
|||
|
|
SensPrintA(SENS_INFO, ("\t| ClassFactory::CreateInstance(IEventObjectChange)\n"));
|
|||
|
|
pObjChange = new CImpIEventObjectChange();
|
|||
|
|
if (NULL != pObjChange)
|
|||
|
|
{
|
|||
|
|
hr = pObjChange->QueryInterface(riid, ppvObj);
|
|||
|
|
SensPrintA(SENS_INFO, ("\t| QI on CImpIEventObjectChange returned 0x%x\n", hr));
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
hr = E_NOINTERFACE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (NULL != *ppvObj)
|
|||
|
|
{
|
|||
|
|
InterlockedIncrement((PLONG) &g_cCFObj);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
SensPrintA(SENS_INFO, ("\t| Returning 0x%x from CF:CreateInstance\n", hr));
|
|||
|
|
|
|||
|
|
return hr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// LockServer
|
|||
|
|
//
|
|||
|
|
STDMETHODIMP
|
|||
|
|
CIEventObjectChangeCF::LockServer(
|
|||
|
|
BOOL fLock
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
if (fLock)
|
|||
|
|
{
|
|||
|
|
InterlockedIncrement((PLONG) &g_cCFLock);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
InterlockedDecrement((PLONG) &g_cCFLock);
|
|||
|
|
|
|||
|
|
InterlockedIncrement((PLONG) &g_cCFObj);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return NOERROR;
|
|||
|
|
}
|
|||
|
|
|