CEnumRegRoot Class Reference

Inheritance diagram for CEnumRegRoot:

Collaboration diagram for CEnumRegRoot:

Public Member Functions
	CEnumRegRoot ()
	~CEnumRegRoot ()
HRESULT	EnumerateNext (LPITEMIDLIST *ppidl)
virtual HRESULT STDMETHODCALLTYPE	Next (ULONG celt, LPITEMIDLIST *rgelt, ULONG *pceltFetched)
virtual HRESULT STDMETHODCALLTYPE	Skip (ULONG celt)
virtual HRESULT STDMETHODCALLTYPE	Reset ()
virtual HRESULT STDMETHODCALLTYPE	Clone (IEnumIDList **ppenum)
Public Member Functions inherited from ATL::CComObjectRootEx< CComMultiThreadModelNoCS >
	~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 Member Functions inherited from IEnumIDList
HRESULT	Next ([in] ULONG celt, [out, size_is(celt), length_is(*pceltFetched)] PITEMID_CHILD *rgelt, [out] ULONG *pceltFetched)
HRESULT	Skip ([in] ULONG celt)
HRESULT	Reset ()
HRESULT	Clone ([out] IEnumIDList **ppenum)
Public Member Functions inherited from IUnknown
HRESULT	QueryInterface ([in] REFIID riid, [out, iid_is(riid)] void **ppvObject)
ULONG	AddRef ()
ULONG	Release ()

Private Attributes
UINT	m_idx

Additional Inherited Members
Public Types inherited from IEnumIDList
typedef IEnumIDList *	LPENUMIDLIST
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)
Public Attributes inherited from ATL::CComObjectRootBase
LONG	m_dwRef

Detailed Description

Definition at line 184 of file ntobjenum.cpp.

Constructor & Destructor Documentation

CEnumRegRoot()

CEnumRegRoot::CEnumRegRoot ( )

inline

Definition at line 191 of file ntobjenum.cpp.

        : m_idx(0)
    {
    }

~CEnumRegRoot()

CEnumRegRoot::~CEnumRegRoot ( )

inline

Definition at line 196 of file ntobjenum.cpp.

    {
    }

Member Function Documentation

Clone()

virtual HRESULT STDMETHODCALLTYPE CEnumRegRoot::Clone ( IEnumIDList **  ppenum )

inlinevirtual

Implements IEnumIDList.

Definition at line 285 of file ntobjenum.cpp.

    {
        return E_NOTIMPL;
    }

EnumerateNext()

HRESULT CEnumRegRoot::EnumerateNext ( LPITEMIDLIST *  ppidl )

inline

Definition at line 200 of file ntobjenum.cpp.

    {
        if (m_idx >= _countof(RootKeys))
            return S_FALSE;
 
        RootKeyEntry& key = RootKeys[m_idx++];
 
        PCWSTR name = key.keyName;
        DWORD cchName = wcslen(name);
 
        REG_ENTRY_TYPE otype = REG_ENTRY_ROOT;
 
        DWORD entryBufferLength = FIELD_OFFSET(RegPidlEntry, entryName) + sizeof(WCHAR) + cchName * sizeof(WCHAR);
 
        // allocate space for the terminator
        entryBufferLength += FIELD_OFFSET(SHITEMID, abID);
 
        RegPidlEntry* entry = (RegPidlEntry*) CoTaskMemAlloc(entryBufferLength);
        if (!entry)
            return E_OUTOFMEMORY;
 
        memset(entry, 0, entryBufferLength);
 
        entry->cb = FIELD_OFFSET(RegPidlEntry, entryName);
        entry->magic = REGISTRY_PIDL_MAGIC;
        entry->entryType = otype;
        entry->rootKey = key.key;
 
        if (cchName > 0)
        {
            entry->entryNameLength = cchName * sizeof(WCHAR);
            StringCbCopyNW(entry->entryName, entryBufferLength, name, entry->entryNameLength);
            entry->cb += entry->entryNameLength + sizeof(WCHAR);
        }
        else
        {
            entry->entryNameLength = 0;
            entry->entryName[0] = 0;
            entry->cb += sizeof(WCHAR);
        }
 
        if (ppidl)
            *ppidl = (LPITEMIDLIST) entry;
        return S_OK;
    }

Referenced by Next(), CEnumRegKey::Next(), CEnumNTDirectory::Next(), Skip(), CEnumRegKey::Skip(), and CEnumNTDirectory::Skip().

Next()

virtual HRESULT STDMETHODCALLTYPE CEnumRegRoot::Next ( ULONG  celt, LPITEMIDLIST *  rgelt, ULONG *  pceltFetched  )

inlinevirtual

Definition at line 246 of file ntobjenum.cpp.

    {
        if (pceltFetched)
            *pceltFetched = 0;
 
        while (celt-- > 0)
        {
            HRESULT hr = EnumerateNext(rgelt);
            if (hr != S_OK)
                return hr;
 
            if (pceltFetched)
                (*pceltFetched)++;
            if (rgelt)
                rgelt++;
        }
 
        return S_OK;
    }

Reset()

virtual HRESULT STDMETHODCALLTYPE CEnumRegRoot::Reset ( )

inlinevirtual

Implements IEnumIDList.

Definition at line 280 of file ntobjenum.cpp.

    {
        return E_NOTIMPL;
    }

Skip()

virtual HRESULT STDMETHODCALLTYPE CEnumRegRoot::Skip ( ULONG  celt )

inlinevirtual

Implements IEnumIDList.

Definition at line 266 of file ntobjenum.cpp.

    {
        while (celt > 0)
        {
            HRESULT hr = EnumerateNext(NULL);
            if (FAILED(hr))
                return hr;
            if (hr != S_OK)
                break;
        }
 
        return S_OK;
    }

Member Data Documentation

m_idx

UINT CEnumRegRoot::m_idx

private

Definition at line 188 of file ntobjenum.cpp.

Referenced by EnumerateNext(), CEnumRegKey::EnumerateNext(), CEnumRegKey::NextKey(), and CEnumRegKey::NextValue().

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The documentation for this class was generated from the following file:

• dll/shellext/ntobjshex/ntobjenum.cpp