190 lines
4.6 KiB
C++
190 lines
4.6 KiB
C++
/*****************************************************************************\
|
|
FILE: classfactory.cpp
|
|
|
|
DESCRIPTION:
|
|
This file will be the Class Factory.
|
|
|
|
BryanSt 4/4/2000 (Bryan Starbuck)
|
|
Copyright (C) Microsoft Corp 2000-2000. All rights reserved.
|
|
\*****************************************************************************/
|
|
|
|
#include "priv.h"
|
|
#include "classfactory.h"
|
|
#include "imagemenu.h"
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* CClassFactory
|
|
*
|
|
*
|
|
*****************************************************************************/
|
|
|
|
class CClassFactory : public IClassFactory
|
|
{
|
|
public:
|
|
//////////////////////////////////////////////////////
|
|
// Public Interfaces
|
|
//////////////////////////////////////////////////////
|
|
|
|
// *** IUnknown ***
|
|
virtual STDMETHODIMP_(ULONG) AddRef(void);
|
|
virtual STDMETHODIMP_(ULONG) Release(void);
|
|
virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);
|
|
|
|
// *** IClassFactory ***
|
|
virtual STDMETHODIMP CreateInstance(IN IUnknown * punkOuter, IN REFIID riid, OUT void **ppvObject);
|
|
virtual STDMETHODIMP LockServer(BOOL fLock);
|
|
|
|
public:
|
|
CClassFactory(REFCLSID rclsid);
|
|
~CClassFactory(void);
|
|
|
|
// Friend Functions
|
|
friend HRESULT CClassFactory_Create(REFCLSID rclsid, REFIID riid, LPVOID * ppvObj);
|
|
|
|
protected:
|
|
int m_cRef;
|
|
CLSID m_rclsid;
|
|
};
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
* IClassFactory::CreateInstance
|
|
*****************************************************************************/
|
|
|
|
HRESULT CClassFactory::CreateInstance(IN IUnknown * punkOuter, IN REFIID riid, OUT void **ppvObject)
|
|
{
|
|
HRESULT hr = E_INVALIDARG;
|
|
|
|
if (NULL != ppvObject)
|
|
{
|
|
if (!punkOuter)
|
|
{
|
|
if (IsEqualCLSID(m_rclsid, CLSID_CImageMenu))
|
|
{
|
|
hr = CImageMenu_CreateInstance(punkOuter, riid, ppvObject);
|
|
}
|
|
else
|
|
{
|
|
TCHAR szGuid[GUIDSTR_MAX];
|
|
|
|
SHStringFromGUID(m_rclsid, szGuid, ARRAYSIZE(szGuid));
|
|
AssertMsg(0, TEXT("CClassFactory::CreateInstance(%s) failed because we don't support that CLSID. This is because someone made a registration bug."), szGuid); // What are you looking for?
|
|
hr = E_NOINTERFACE;
|
|
}
|
|
}
|
|
else
|
|
{ // Does anybody support aggregation any more?
|
|
hr = ResultFromScode(CLASS_E_NOAGGREGATION);
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* IClassFactory::LockServer
|
|
*
|
|
* What a poor function. Locking the server is identical to
|
|
* creating an object and not releasing it until you want to unlock
|
|
* the server.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
HRESULT CClassFactory::LockServer(BOOL fLock)
|
|
{
|
|
if (fLock)
|
|
DllAddRef();
|
|
else
|
|
DllRelease();
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* CClassFactory_Create
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/****************************************************\
|
|
Constructor
|
|
\****************************************************/
|
|
CClassFactory::CClassFactory(REFCLSID rclsid) : m_cRef(1)
|
|
{
|
|
m_rclsid = rclsid;
|
|
DllAddRef();
|
|
}
|
|
|
|
|
|
/****************************************************\
|
|
Destructor
|
|
\****************************************************/
|
|
CClassFactory::~CClassFactory()
|
|
{
|
|
DllRelease();
|
|
}
|
|
|
|
|
|
//===========================
|
|
// *** IUnknown Interface ***
|
|
//===========================
|
|
|
|
ULONG CClassFactory::AddRef()
|
|
{
|
|
m_cRef++;
|
|
return m_cRef;
|
|
}
|
|
|
|
ULONG CClassFactory::Release()
|
|
{
|
|
ASSERT(m_cRef > 0);
|
|
m_cRef--;
|
|
|
|
if (m_cRef > 0)
|
|
return m_cRef;
|
|
|
|
delete this;
|
|
return 0;
|
|
}
|
|
|
|
HRESULT CClassFactory::QueryInterface(REFIID riid, void **ppvObj)
|
|
{
|
|
if (IsEqualCLSID(riid, IID_IUnknown) || IsEqualCLSID(riid, IID_IClassFactory))
|
|
{
|
|
*ppvObj = SAFECAST(this, IClassFactory *);
|
|
}
|
|
else
|
|
{
|
|
TraceMsg(TF_WMTHEME, "CClassFactory::QueryInterface() failed.");
|
|
*ppvObj = NULL;
|
|
return E_NOINTERFACE;
|
|
}
|
|
|
|
AddRef();
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
|
|
HRESULT CClassFactory_Create(REFCLSID rclsid, REFIID riid, LPVOID * ppvObj)
|
|
{
|
|
HRESULT hres;
|
|
|
|
if (IsEqualCLSID(riid, IID_IClassFactory))
|
|
{
|
|
*ppvObj = (LPVOID) new CClassFactory(rclsid);
|
|
hres = (*ppvObj) ? S_OK : E_OUTOFMEMORY;
|
|
}
|
|
else
|
|
hres = ResultFromScode(E_NOINTERFACE);
|
|
|
|
return hres;
|
|
}
|
|
|
|
|
|
|