CLSFACT.CPP

/************************************************************************** 
   THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF 
   ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
   THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A 
   PARTICULAR PURPOSE. 
 
   Copyright 1997 Microsoft Corporation.  All Rights Reserved. 
**************************************************************************/ 
 
/************************************************************************** 
 
   File:          ClsFact.cpp 
    
   Description:   CClassFactory implementation 
 
**************************************************************************/ 
 
/************************************************************************** 
   #include statements 
**************************************************************************/ 
 
#include "ClsFact.h" 
 
/************************************************************************** 
   global variables 
**************************************************************************/ 
 
extern DWORD   g_DllRefCount; 
 
/************************************************************************** 
 
   CClassFactory::CClassFactory 
 
**************************************************************************/ 
 
CClassFactory::CClassFactory() 
{ 
OutputDebugString(TEXT("CClassFactory's constructor\n")); 
 
m_ObjRefCount = 0; 
} 
 
/************************************************************************** 
 
   CClassFactory::~CClassFactory 
 
**************************************************************************/ 
 
CClassFactory::~CClassFactory() 
{ 
OutputDebugString(TEXT("CClassFactory's destructor\n")); 
} 
 
/************************************************************************** 
 
   CClassFactory::QueryInterface 
 
**************************************************************************/ 
 
STDMETHODIMP CClassFactory::QueryInterface(  REFIID riid,  
                                             LPVOID *ppReturn) 
{ 
OutputDebugString(TEXT("CClassFactory::QueryInterface\n")); 
 
if(IsEqualIID(riid, IID_IUnknown)) 
   { 
   *ppReturn = (LPUNKNOWN)(LPCLASSFACTORY)this; 
   m_ObjRefCount++; 
   return ResultFromScode(S_OK); 
   } 
    
if(IsEqualIID(riid, IID_IClassFactory)) 
   { 
   *ppReturn = (LPCLASSFACTORY)this; 
   m_ObjRefCount++; 
   return ResultFromScode(S_OK); 
   }    
 
*ppReturn = NULL; 
return ResultFromScode(E_NOINTERFACE); 
}                                              
 
/************************************************************************** 
 
   CClassFactory::AddRef 
 
**************************************************************************/ 
 
STDMETHODIMP_(DWORD) CClassFactory::AddRef() 
{ 
OutputDebugString(TEXT("CClassFactory::AddRef\n")); 
 
return ++m_ObjRefCount; 
} 
 
 
/************************************************************************** 
 
   CClassFactory::Release 
 
**************************************************************************/ 
 
STDMETHODIMP_(DWORD) CClassFactory::Release() 
{ 
TCHAR szText[MAX_PATH]; 
wsprintf(szText, TEXT("CClassFactory::Release - ref count will be %d\n"), m_ObjRefCount - 1); 
OutputDebugString(szText); 
 
if(--m_ObjRefCount == 0) 
   delete this; 
    
return m_ObjRefCount; 
} 
 
/************************************************************************** 
 
   CClassFactory::CreateInstance 
 
**************************************************************************/ 
 
STDMETHODIMP CClassFactory::CreateInstance(  LPUNKNOWN pUnknown,  
                                             REFIID riid,  
                                             LPVOID *ppObject) 
{ 
OutputDebugString(TEXT("CClassFactory::CreateInstance\n")); 
 
*ppObject = NULL; 
 
if(pUnknown != NULL) 
   return ResultFromScode(CLASS_E_NOAGGREGATION); 
 
COleDocument *pOleDoc = new COleDocument; 
if(NULL == pOleDoc) 
   return ResultFromScode(E_OUTOFMEMORY); 
   
//get the QueryInterface return for our return value 
HRESULT hr = pOleDoc->QueryInterface(riid, ppObject); 
 
//return the result from QueryInterface 
return hr; 
} 
 
/************************************************************************** 
 
   CClassFactory::LockServer 
 
**************************************************************************/ 
 
STDMETHODIMP CClassFactory::LockServer(BOOL fLock) 
{ 
OutputDebugString(TEXT("CClassFactory::LockServer - ")); 
 
if(fLock) 
   { 
   OutputDebugString(TEXT("Lock\n")); 
   g_DllRefCount++; 
   } 
else 
   { 
   OutputDebugString(TEXT("Unlock\n")); 
   g_DllRefCount--; 
   } 
 
return S_OK; 
}