229 lines
5.1 KiB
C++
229 lines
5.1 KiB
C++
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//**********************************************************************
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// File name: ICF.CPP
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//
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// Implementation file for the CClassFactory Class
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//
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// Functions:
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//
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// See icf.h for a list of member functions.
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//
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// Copyright (c) 1993 Microsoft Corporation. All rights reserved.
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//**********************************************************************
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#include "pre.h"
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#include "app.h"
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#include "doc.h"
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#include "icf.h"
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//**********************************************************************
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//
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// CClassFactory::QueryInterface
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//
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// Purpose:
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// Used for interface negotiation
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//
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// Parameters:
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//
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// REFIID riid - Interface being queried for.
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//
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// LPVOID FAR *ppvObj - Out pointer for the interface.
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//
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// Return Value:
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//
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// S_OK - Success
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// E_NOINTERFACE - Failure
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//
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// Function Calls:
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// Function Location
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//
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// CClassFactory::AddRef ICF.CPP
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//
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//********************************************************************
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STDMETHODIMP CClassFactory::QueryInterface ( REFIID riid, LPVOID FAR* ppvObj)
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{
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TestDebugOut(TEXT("In CClassFactory::QueryInterface\r\n"));
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SCODE sc = S_OK;
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if (IsEqualIID(riid, IID_IUnknown) ||
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IsEqualIID(riid, IID_IClassFactory) )
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*ppvObj = this;
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else
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{
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*ppvObj = NULL;
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sc = E_NOINTERFACE;
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}
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if (*ppvObj)
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((LPUNKNOWN)*ppvObj)->AddRef();
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// pass it on to the Application object
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return ResultFromScode(sc);
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}
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//**********************************************************************
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//
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// CClassFactory::AddRef
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//
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// Purpose:
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//
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// Increments the reference count on CClassFactory and the application
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// object.
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//
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// Parameters:
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//
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// None
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//
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// Return Value:
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//
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// The Reference count on CClassFactory
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//
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// Function Calls:
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// Function Location
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//
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// OuputDebugString Windows API
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//
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//********************************************************************
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STDMETHODIMP_(ULONG) CClassFactory::AddRef ()
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{
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TestDebugOut(TEXT("In CClassFactory::AddRef\r\n"));
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return ++m_nCount;
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}
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//**********************************************************************
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//
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// CClassFactory::Release
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//
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// Purpose:
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//
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// Decrements the reference count of CClassFactory and the
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// application object.
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//
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// Parameters:
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//
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// None
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//
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// Return Value:
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//
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// The new reference count
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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//
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//********************************************************************
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STDMETHODIMP_(ULONG) CClassFactory::Release ()
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{
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TestDebugOut(TEXT("In CClassFactory::Release\r\n"));
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if (--m_nCount== 0)
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{
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delete this;
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return(0);
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}
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return m_nCount;
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}
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//**********************************************************************
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//
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// CClassFactory::CreateInstance
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//
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// Purpose:
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//
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// Instantiates a new OLE object
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//
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// Parameters:
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//
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// LPUNKNOWN pUnkOuter - Pointer to the controlling unknown
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//
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// REFIID riid - The interface type to fill in ppvObject
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//
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// LPVOID FAR* ppvObject - Out pointer for the object
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//
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// Return Value:
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//
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// S_OK - Creation was successful
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// CLASS_E_NOAGGREGATION - Tried to be created as part of an aggregate
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//
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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// CSimpSvrDoc::CreateObject DOC.CPP
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//
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//********************************************************************
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STDMETHODIMP CClassFactory::CreateInstance ( LPUNKNOWN pUnkOuter,
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REFIID riid,
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LPVOID FAR* ppvObject)
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{
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HRESULT hErr;
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TestDebugOut(TEXT("In CClassFactory::CreateInstance\r\n"));
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// need to NULL the out parameter
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*ppvObject = NULL;
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// we don't support aggregation...
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if (pUnkOuter)
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{
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hErr = ResultFromScode(CLASS_E_NOAGGREGATION);
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goto error;
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}
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hErr = m_lpApp->m_lpDoc->CreateObject(riid, ppvObject);
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error:
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return hErr;
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}
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//**********************************************************************
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//
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// CClassFactory::LockServer
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//
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// Purpose:
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// To lock the server and keep an open object application in memory
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//
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// Parameters:
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//
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// BOOL fLock - TRUE to lock the server, FALSE to unlock it
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//
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// Return Value:
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//
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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// CoLockObjectExternal OLE API
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// ResultFromScode OLE API
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//
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//
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//********************************************************************
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STDMETHODIMP CClassFactory::LockServer ( BOOL fLock)
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{
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HRESULT hRes;
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TestDebugOut(TEXT("In CClassFactory::LockServer\r\n"));
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if ((hRes=CoLockObjectExternal(m_lpApp, fLock, TRUE)) != S_OK)
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{
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TestDebugOut(TEXT("CClassFactory::LockServer \
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CoLockObjectExternal fails\n"));
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return(hRes);
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}
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return ResultFromScode( S_OK);
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}
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