//**********************************************************************
// File name: ICF.CPP
//
//    Implementation file for the CClassFactory Class
//
// Functions:
//
//    See icf.h for a list of member functions.
//
// Copyright (c) 1993 Microsoft Corporation. All rights reserved.
//**********************************************************************

#include "pre.h"
#include "app.h"
#include "doc.h"
#include "icf.h"

//**********************************************************************
//
// CClassFactory::QueryInterface
//
// Purpose:
//
//
// Parameters:
//
//      REFIID riid         -   Interface being queried for.
//
//      LPVOID FAR *ppvObj  -   Out pointer for the interface.
//
// Return Value:
//
//      S_OK            - Success
//      E_NOINTERFACE   - Failure
//
// Function Calls:
//      Function                    Location
//
//      CSimpSvrApp::QueryInterface APP.CPP
//
// Comments:
//
//
//********************************************************************

STDMETHODIMP CClassFactory::QueryInterface  ( REFIID riid, LPVOID FAR* ppvObj)
{
	OutputDebugString("In CClassFactory::QueryInterface\r\n");

	SCODE sc = S_OK;

	if ( (riid == IID_IUnknown) ||
		 (riid == IID_IClassFactory) )
		*ppvObj = this;
	else
		{
		*ppvObj = NULL;
		sc = E_NOINTERFACE;
		}

	if (*ppvObj)
		((LPUNKNOWN)*ppvObj)->AddRef();

	// pass it on to the Application object
	return ResultFromScode(sc);
};

//**********************************************************************
//
// CClassFactory::AddRef
//
// Purpose:
//
//      Increments the reference count on CClassFactory and the application
//      object.
//
// Parameters:
//
//      None
//
// Return Value:
//
//      The Reference count on CClassFactory
//
// Function Calls:
//      Function                    Location
//
//      OuputDebugString            Windows API
//
// Comments:
//
//
//********************************************************************


STDMETHODIMP_(ULONG) CClassFactory::AddRef ()
{
	OutputDebugString("In CClassFactory::AddRef\r\n");

	return ++m_nCount;
};

//**********************************************************************
//
// CClassFactory::Release
//
// Purpose:
//
//      Decrements the reference count of CClassFactory and the
//      application object.
//
// Parameters:
//
//      None
//
// Return Value:
//
//      The new reference count
//
// Function Calls:
//      Function                    Location
//
//      OutputDebugString           Windows API
//
// Comments:
//
//
//********************************************************************


STDMETHODIMP_(ULONG) CClassFactory::Release ()
{
	OutputDebugString("In CClassFactory::Release\r\n");

	if (--m_nCount == 0) {
		delete this;
        return 0;
    }

	return m_nCount;
};


//**********************************************************************
//
// CClassFactory::CreateInstance
//
// Purpose:
//
//      Instantiates a new OLE object
//
// Parameters:
//
//      LPUNKNOWN pUnkOuter     - Pointer to the controlling unknown
//
//      REFIID riid             - The interface type to fill in ppvObject
//
//      LPVOID FAR* ppvObject   - Out pointer for the object
//
// Return Value:
//
//      S_OK                    - Creation was successful
//      CLASS_E_NOAGGREGATION   - Tried to be created as part of an aggregate
//
//
// Function Calls:
//      Function                    Location
//
//      OutputDebugString           Windows API
//      CSimpSvrDoc::CreateObject   DOC.CPP
//
// Comments:
//
//
//********************************************************************

STDMETHODIMP CClassFactory::CreateInstance ( LPUNKNOWN pUnkOuter,
							  REFIID riid,
							  LPVOID FAR* ppvObject)
{
	HRESULT hErr;

	OutputDebugString("In CClassFactory::CreateInstance\r\n");

	// need to NULL the out parameter
	*ppvObject = NULL;

	// we don't support aggregation...
	if (pUnkOuter)
		{
		hErr = ResultFromScode(CLASS_E_NOAGGREGATION);
		goto error;
		}

	hErr = m_lpApp->m_lpDoc->CreateObject(riid, ppvObject);

error:
	return hErr;
};

//**********************************************************************
//
// CClassFactory::LockServer
//
// Purpose:
//
//
// Parameters:
//
//      BOOL fLock      - TRUE to lock the server, FALSE to unlock it
//
// Return Value:
//
//      S_OK
//
// Function Calls:
//      Function                    Location
//
//      OutputDebugString           Windows API
//      CoLockObjectExternal        OLE API
//      ResultFromScode             OLE API
//
// Comments:
//
//
//********************************************************************


STDMETHODIMP CClassFactory::LockServer ( BOOL fLock)
{
	OutputDebugString("In CClassFactory::LockServer\r\n");
	CoLockObjectExternal(m_lpApp, fLock, TRUE);

	return ResultFromScode( S_OK);
};
