RecycleBin5Enum Class Reference

Inheritance diagram for RecycleBin5Enum:

Collaboration diagram for RecycleBin5Enum:

Public Member Functions
	RecycleBin5Enum ()
virtual	~RecycleBin5Enum ()
HRESULT	Init (_In_ IRecycleBin5 *prb, _In_ HANDLE hInfo, _In_ HANDLE hInfoMapped, _In_ LPCWSTR pszPrefix)
STDMETHODIMP	QueryInterface (REFIID riid, void **ppvObject) override
	STDMETHODIMP_ (ULONG) AddRef() override
	STDMETHODIMP_ (ULONG) Release() override
STDMETHODIMP	Next (DWORD celt, IRecycleBinFile **rgelt, DWORD *pceltFetched) override
STDMETHODIMP	Skip (DWORD celt) override
STDMETHODIMP	Reset () override

Protected Attributes
LONG	m_ref
IRecycleBin5 *	m_recycleBin
HANDLE	m_hInfo
INFO2_HEADER *	m_pInfo
DWORD	m_dwCurrent
LPWSTR	m_pszPrefix

Detailed Description

Definition at line 303 of file recyclebin_v5_enumerator.cpp.

Constructor & Destructor Documentation

RecycleBin5Enum()

RecycleBin5Enum::RecycleBin5Enum

(

)

Definition at line 431 of file recyclebin_v5_enumerator.cpp.

    : m_ref(1)
    , m_recycleBin(NULL)
    , m_hInfo(NULL)
    , m_pInfo(NULL)
    , m_dwCurrent(0)
    , m_pszPrefix(NULL)
{
}

~RecycleBin5Enum()

RecycleBin5Enum::~RecycleBin5Enum ( )

virtual

Definition at line 359 of file recyclebin_v5_enumerator.cpp.

{
    TRACE("(%p)\n", this);
 
    m_recycleBin->OnClosing(this);
    UnmapViewOfFile(m_pInfo);
    m_recycleBin->Release();
    SHFree(m_pszPrefix);
}

Member Function Documentation

Init()

HRESULT RecycleBin5Enum::Init	(	_In_ IRecycleBin5 *	prb,
		_In_ HANDLE	hInfo,
		_In_ HANDLE	hInfoMapped,
		_In_ LPCWSTR	pszPrefix
	)

Definition at line 442 of file recyclebin_v5_enumerator.cpp.

{
    m_recycleBin = prb;
    m_recycleBin->AddRef();
 
    HRESULT hr = SHStrDup(pszPrefix, &m_pszPrefix);
    if (FAILED(hr))
        return hr;
 
    m_hInfo = hInfo;
    m_pInfo = (PINFO2_HEADER)MapViewOfFile(hInfoMapped, FILE_MAP_READ, 0, 0, 0);
    if (!m_pInfo)
        return HRESULT_FROM_WIN32(GetLastError());
 
    if (m_pInfo->dwVersion != 5 || m_pInfo->dwRecordSize != sizeof(DELETED_FILE_RECORD))
        return E_FAIL;
 
    return S_OK;
}

Referenced by RecycleBin5Enum_Constructor().

Next()

STDMETHODIMP RecycleBin5Enum::Next ( DWORD  celt, IRecycleBinFile **  rgelt, DWORD *  pceltFetched  )

override

Definition at line 379 of file recyclebin_v5_enumerator.cpp.

{
    HRESULT hr;
 
    TRACE("(%p, %u, %p, %p)\n", this, celt, rgelt, pceltFetched);
 
    if (!rgelt)
        return E_POINTER;
    if (!pceltFetched && celt > 1)
        return E_INVALIDARG;
 
    ULARGE_INTEGER FileSize;
    FileSize.u.LowPart = GetFileSize(m_hInfo, &FileSize.u.HighPart);
    if (FileSize.u.LowPart == 0)
        return HRESULT_FROM_WIN32(GetLastError());
 
    DWORD dwEntries =
        (DWORD)((FileSize.QuadPart - sizeof(INFO2_HEADER)) / sizeof(DELETED_FILE_RECORD));
 
    DWORD iEntry = m_dwCurrent, fetched = 0;
    PDELETED_FILE_RECORD pDeletedFile = (PDELETED_FILE_RECORD)(m_pInfo + 1) + iEntry;
    for (; iEntry < dwEntries && fetched < celt; ++iEntry)
    {
        hr = RecycleBin5File_Constructor(m_recycleBin, m_pszPrefix, pDeletedFile, &rgelt[fetched]);
        if (SUCCEEDED(hr))
            fetched++;
        pDeletedFile++;
    }
 
    m_dwCurrent = iEntry;
    if (pceltFetched)
        *pceltFetched = fetched;
    if (fetched == celt)
        return S_OK;
    else
        return S_FALSE;
}

QueryInterface()

STDMETHODIMP RecycleBin5Enum::QueryInterface ( REFIID  riid, void **  ppvObject  )

override

Definition at line 334 of file recyclebin_v5_enumerator.cpp.

{
    TRACE("(%p, %s, %p)\n", this, debugstr_guid(&riid), ppvObject);
 
    if (!ppvObject)
        return E_POINTER;
 
    if (IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IRecycleBinEnumList))
        *ppvObject = static_cast<IRecycleBinEnumList *>(this);
    else
    {
        *ppvObject = NULL;
        return E_NOINTERFACE;
    }
 
    AddRef();
    return S_OK;
}

Reset()

STDMETHODIMP RecycleBin5Enum::Reset ( )

override

Definition at line 424 of file recyclebin_v5_enumerator.cpp.

{
    TRACE("(%p)\n", this);
    m_dwCurrent = 0;
    return S_OK;
}

Skip()

STDMETHODIMP RecycleBin5Enum::Skip ( DWORD  celt )

override

Definition at line 417 of file recyclebin_v5_enumerator.cpp.

{
    TRACE("(%p, %u)\n", this, celt);
    m_dwCurrent += celt;
    return S_OK;
}

STDMETHODIMP_() [1/2]

RecycleBin5Enum::STDMETHODIMP_ ( ULONG  )

override

STDMETHODIMP_() [2/2]

RecycleBin5Enum::STDMETHODIMP_ ( ULONG  )

override

Member Data Documentation

m_dwCurrent

DWORD RecycleBin5Enum::m_dwCurrent

protected

Definition at line 330 of file recyclebin_v5_enumerator.cpp.

Referenced by Next(), Reset(), and Skip().

m_hInfo

HANDLE RecycleBin5Enum::m_hInfo

protected

Definition at line 328 of file recyclebin_v5_enumerator.cpp.

Referenced by Init(), and Next().

m_pInfo

INFO2_HEADER* RecycleBin5Enum::m_pInfo

protected

Definition at line 329 of file recyclebin_v5_enumerator.cpp.

Referenced by Init(), Next(), and ~RecycleBin5Enum().

m_pszPrefix

LPWSTR RecycleBin5Enum::m_pszPrefix

protected

Definition at line 331 of file recyclebin_v5_enumerator.cpp.

Referenced by Init(), Next(), and ~RecycleBin5Enum().

m_recycleBin

IRecycleBin5* RecycleBin5Enum::m_recycleBin

protected

Definition at line 327 of file recyclebin_v5_enumerator.cpp.

Referenced by Init(), Next(), and ~RecycleBin5Enum().

m_ref

LONG RecycleBin5Enum::m_ref

protected

Definition at line 326 of file recyclebin_v5_enumerator.cpp.

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

• dll/win32/shell32/shellrecyclebin/recyclebin_v5_enumerator.cpp