windows-nt/Source/XPSP1/NT/enduser/stuff/itss/enum.h

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2020-09-26 03:20:57 -05:00
// Enum.h -- Definition of class CEnumStorage
#ifndef __ENUM_H__
#define __ENUM_H__
class CEnumStorage : public CITUnknown
{
public:
static HRESULT NewEnumStorage
(IUnknown *pUnkOuter,
IITFileSystem *pITFS, PathInfo *pPI,
IEnumSTATSTG **ppEnumSTATSTG
);
~CEnumStorage(void);
private:
CEnumStorage(IUnknown *pUnkOuter);
class CImpIEnumStorage : public IITEnumSTATSTG
{
public:
CImpIEnumStorage(CEnumStorage *pBackObj, IUnknown *punkOuter);
~CImpIEnumStorage(void);
HRESULT Initial(IITFileSystem *pITFS, PathInfo *pPI);
HRESULT InitClone(CImpIEnumStorage *pEnum);
// IEnumSTATSTG methods:
HRESULT STDMETHODCALLTYPE GetNextEntryInSeq(ULONG celt, PathInfo *rgelt, ULONG *pceltFetched);
HRESULT STDMETHODCALLTYPE GetFirstEntryInSeq(PathInfo *rgelt);
/* [local] */ HRESULT __stdcall Next(
/* [in] */ ULONG celt,
/* [in] */ STATSTG __RPC_FAR *rgelt,
/* [out] */ ULONG __RPC_FAR *pceltFetched);
HRESULT __stdcall Skip(
/* [in] */ ULONG celt);
HRESULT __stdcall Reset( void);
HRESULT __stdcall Clone(
/* [out] */ IEnumSTATSTG __RPC_FAR *__RPC_FAR *ppenum);
private:
HRESULT __stdcall NextPathEntry(STATSTG *pStatStg);
enum EnumState { Before, During, After };
IEnumSTATSTG *m_pEnumPaths;
UINT m_cwcBasePath;
WCHAR m_awszBasePath[MAX_PATH];
WCHAR m_awcKeyBuffer[MAX_PATH];
enum EnumState m_State;
};
friend CImpIEnumStorage;
CImpIEnumStorage m_ImpIEnumStorage;
public:
static HRESULT NewClone(IUnknown *pUnkOuter, CImpIEnumStorage *pEnum,
IEnumSTATSTG **ppEnumSTATSTG);
};
typedef CEnumStorage *PCEnumStorage;
inline CEnumStorage::CEnumStorage(IUnknown *pUnkOuter)
: m_ImpIEnumStorage(this, pUnkOuter),
CITUnknown(&IID_IEnumSTATSTG, 1, &m_ImpIEnumStorage)
{
}
inline CEnumStorage::~CEnumStorage(void)
{
}
#endif // __ENUM_H__