#include <atlcom.h>

Inheritance diagram for ATL::CComClassFactorySingleton< T >:

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Collaboration diagram for ATL::CComClassFactorySingleton< T >:

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Public Member Functions
	CComClassFactorySingleton ()

STDMETHOD()	CreateInstance (LPUNKNOWN pUnkOuter, REFIID riid, void **ppvObj)

Public Member Functions inherited from ATL::CComClassFactory
virtual	~CComClassFactory ()

STDMETHOD()	CreateInstance (LPUNKNOWN pUnkOuter, REFIID riid, void **ppvObj)

STDMETHOD()	LockServer (BOOL fLock)

void	SetVoid (void *pv)

Public Member Functions inherited from IClassFactory
HRESULT	CreateInstance ([in, unique] IUnknown pUnkOuter, [in] REFIID riid, [out, iid_is(riid)] void *ppvObject)

HRESULT	RemoteCreateInstance ([in] REFIID riid, [out, iid_is(riid)] IUnknown **ppvObject)

HRESULT	LockServer ([in] BOOL fLock)

HRESULT	RemoteLockServer ([in] BOOL fLock)

Public Member Functions inherited from IUnknown
HRESULT	QueryInterface ([in] REFIID riid, [out, iid_is(riid)] void **ppvObject)

ULONG	AddRef ()

ULONG	Release ()

Public Member Functions inherited from ATL::CComObjectRootEx< CComGlobalsThreadModel >
	~CComObjectRootEx ()

ULONG	InternalAddRef ()

ULONG	InternalRelease ()

void	Lock ()

void	Unlock ()

HRESULT	_AtlInitialConstruct ()

Public Member Functions inherited from ATL::CComObjectRootBase
	CComObjectRootBase ()

	~CComObjectRootBase ()

void	SetVoid (void *)

HRESULT	_AtlFinalConstruct ()

HRESULT	FinalConstruct ()

void	InternalFinalConstructAddRef ()

void	InternalFinalConstructRelease ()

void	FinalRelease ()

Public Attributes
HRESULT	m_hrCreate

IUnknown *	m_spObj

Public Attributes inherited from ATL::CComClassFactory
_ATL_CREATORFUNC *	m_pfnCreateInstance

Public Attributes inherited from ATL::CComObjectRootBase
LONG	m_dwRef

Additional Inherited Members
Public Types inherited from IClassFactory
typedef IClassFactory *	LPCLASSFACTORY

Public Types inherited from IUnknown
typedef IUnknown *	LPUNKNOWN

Static Public Member Functions inherited from ATL::CComObjectRootBase
static void WINAPI	ObjectMain (bool)

static const struct _ATL_CATMAP_ENTRY *	GetCategoryMap ()

static HRESULT WINAPI	InternalQueryInterface (void pThis, const _ATL_INTMAP_ENTRY pEntries, REFIID iid, void **ppvObject)

Detailed Description

template<class T>
class ATL::CComClassFactorySingleton< T >

Definition at line 772 of file atlcom.h.

Constructor & Destructor Documentation

◆ CComClassFactorySingleton()

template<class T >

ATL::CComClassFactorySingleton< T >::CComClassFactorySingleton ( )

inline

Definition at line 780 of file atlcom.h.

                                :
        m_hrCreate(S_OK),
        m_spObj(NULL)
    {
    }

Member Function Documentation

◆ CreateInstance()

template<class T >

STDMETHOD() ATL::CComClassFactorySingleton< T >::CreateInstance	(	LPUNKNOWN	pUnkOuter,
		REFIID	riid,
		void **	ppvObj
	)

inline

Definition at line 786 of file atlcom.h.

    {
        HRESULT hResult;
 
        if (ppvObj == NULL)
            return E_POINTER;
        *ppvObj = NULL;
 
        if (pUnkOuter != NULL)
            hResult = CLASS_E_NOAGGREGATION;
        else if (m_hrCreate == S_OK && m_spObj == NULL)
        {
            _SEH2_TRY
            {
                Lock();
                if (m_hrCreate == S_OK && m_spObj == NULL)
                {
                    CComObjectCached<T> *pObj;
                    m_hrCreate = CComObjectCached<T>::CreateInstance(&pObj);
                    if (SUCCEEDED(m_hrCreate))
                    {
                        m_hrCreate = pObj->QueryInterface(IID_IUnknown, reinterpret_cast<PVOID *>(&m_spObj));
                        if (FAILED(m_hrCreate))
                            delete pObj;
                    }
                }
            }
            _SEH2_FINALLY
            {
                Unlock();
            }
            _SEH2_END;
        }
        if (m_hrCreate == S_OK)
            hResult = m_spObj->QueryInterface(riid, ppvObj);
        else
            hResult = m_hrCreate;
        return hResult;
    }