CLayerStringList Class Reference

#include <CLayerStringList.hpp>

Inheritance diagram for CLayerStringList:

Collaboration diagram for CLayerStringList:

Public Member Functions
	CLayerStringList ()
	~CLayerStringList ()
virtual HRESULT STDMETHODCALLTYPE	Next (ULONG celt, LPOLESTR *rgelt, ULONG *pceltFetched)
virtual HRESULT STDMETHODCALLTYPE	Skip (ULONG celt)
virtual HRESULT STDMETHODCALLTYPE	Reset ()
virtual HRESULT STDMETHODCALLTYPE	Clone (IEnumString **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 IEnumString
HRESULT	RemoteNext ([in] ULONG celt, [out, size_is(celt), length_is(*pceltFetched)] LPOLESTR *rgelt, [out] ULONG *pceltFetched)
Public Member Functions inherited from IUnknown
HRESULT	QueryInterface ([in] REFIID riid, [out, iid_is(riid)] void **ppvObject)
ULONG	AddRef ()
ULONG	Release ()

Protected Attributes
PDB	m_db
TAGID	m_root
TAGID	m_layer

Additional Inherited Members
Public Types inherited from IEnumString
typedef IEnumString *	LPENUMSTRING
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 11 of file CLayerStringList.hpp.

Constructor & Destructor Documentation

CLayerStringList()

CLayerStringList::CLayerStringList ( )

inline

Definition at line 16 of file CLayerStringList.hpp.

        :m_root(TAGID_NULL), m_layer(TAGID_NULL)
    {
        WCHAR buf[MAX_PATH];
        SdbGetAppPatchDir(NULL, buf, MAX_PATH);
        StringCchCatW(buf, _countof(buf), L"\\sysmain.sdb");
        m_db = SdbOpenDatabase(buf, DOS_PATH);
        Reset();
    }

~CLayerStringList()

CLayerStringList::~CLayerStringList ( )

inline

Definition at line 26 of file CLayerStringList.hpp.

    {
        SdbCloseDatabase(m_db);
    }

Member Function Documentation

Clone()

virtual HRESULT STDMETHODCALLTYPE CLayerStringList::Clone ( IEnumString **  ppenum )

inlinevirtual

Implements IEnumString.

Definition at line 86 of file CLayerStringList.hpp.

    {
        return E_NOTIMPL;
    }

Next()

virtual HRESULT STDMETHODCALLTYPE CLayerStringList::Next ( ULONG  celt, LPOLESTR *  rgelt, ULONG *  pceltFetched  )

inlinevirtual

Implements IEnumString.

Definition at line 31 of file CLayerStringList.hpp.

    {
        if (pceltFetched)
            *pceltFetched = 0;

        while (celt && m_layer)
        {
            TAGID nameid = SdbFindFirstTag(m_db, m_layer, TAG_NAME);
            if (nameid)
            {
                LPWSTR name = SdbGetStringTagPtr(m_db, nameid);
                if (name && !IsBuiltinLayer(name))
                {
                    ULONG Size = wcslen(name) + 1;

                    *rgelt = (LPOLESTR)::CoTaskMemAlloc(Size * sizeof(WCHAR));
                    StringCchCopyW(*rgelt, Size, name);

                    if (pceltFetched)
                        (*pceltFetched)++;

                    celt--;
                    rgelt++;
                }
            }
            m_layer = SdbFindNextTag(m_db, m_root, m_layer);
        }
        return celt ? S_FALSE : S_OK;
    }

Reset()

virtual HRESULT STDMETHODCALLTYPE CLayerStringList::Reset ( void  )

inlinevirtual

Implements IEnumString.

Definition at line 71 of file CLayerStringList.hpp.

    {
        m_root = m_layer = TAGID_NULL;
        if (m_db)
        {
            m_root = SdbFindFirstTag(m_db, TAGID_ROOT, TAG_DATABASE);
            if (m_root != TAGID_NULL)
            {
                m_layer = SdbFindFirstTag(m_db, m_root, TAG_LAYER);
                return S_OK;
            }
        }
        return E_FAIL;
    }

Referenced by CLayerStringList().

Skip()

virtual HRESULT STDMETHODCALLTYPE CLayerStringList::Skip ( ULONG  celt )

inlinevirtual

Implements IEnumString.

Definition at line 61 of file CLayerStringList.hpp.

    {
        while (m_layer && celt)
        {
            m_layer = SdbFindNextTag(m_db, m_root, m_layer);
            --celt;
        }
        return celt ? S_FALSE : S_OK;
    }

Member Data Documentation

m_db

PDB CLayerStringList::m_db

protected

Definition at line 92 of file CLayerStringList.hpp.

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

m_layer

TAGID CLayerStringList::m_layer

protected

Definition at line 94 of file CLayerStringList.hpp.

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

m_root

TAGID CLayerStringList::m_root

protected

Definition at line 93 of file CLayerStringList.hpp.

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

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

• dll/shellext/acppage/CLayerStringList.hpp