EnumFormatEtcImpl Class Reference

implementation of IEnumFORMATETC interface More...

#include <dragdropimpl.h>

Inheritance diagram for EnumFormatEtcImpl:

Collaboration diagram for EnumFormatEtcImpl:

Public Member Functions
	EnumFormatEtcImpl (const FormatArray &ArrFE)
	EnumFormatEtcImpl (const StorageArray &ArrFE)
virtual	~EnumFormatEtcImpl ()
virtual HRESULT STDMETHODCALLTYPE	Next (ULONG, LPFORMATETC, ULONG *)
virtual HRESULT STDMETHODCALLTYPE	Skip (ULONG)
virtual HRESULT STDMETHODCALLTYPE	Reset (void)
virtual HRESULT STDMETHODCALLTYPE	Clone (IEnumFORMATETC **)
Public Member Functions inherited from IComSrvBase< IEnumFORMATETC, EnumFormatEtcImpl >
	STDMETHODIMP_ (ULONG) AddRef()
	STDMETHODIMP_ (ULONG) Release()
Public Member Functions inherited from IComSrvQI< IEnumFORMATETC >
	IComSrvQI (REFIID uuid_base)
STDMETHODIMP	QueryInterface (REFIID riid, LPVOID *ppv)
Public Member Functions inherited from IEnumFORMATETC
HRESULT	Next ([in] ULONG celt, [out, size_is(celt), length_is(*pceltFetched)] FORMATETC *rgelt, [out] ULONG *pceltFetched)
HRESULT	RemoteNext ([in] ULONG celt, [out, size_is(celt), length_is(*pceltFetched)] FORMATETC *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 ()
Public Member Functions inherited from SimpleComObject
ULONG	IncRef ()
ULONG	DecRef ()

Private Types
typedef IComSrvBase< IEnumFORMATETC, EnumFormatEtcImpl >	super

Private Attributes
ULONG	m_cRefCount
FormatArray	m_pFmtEtc
size_t	m_iCur

Additional Inherited Members
Public Types inherited from IEnumFORMATETC
typedef IEnumFORMATETC *	LPENUMFORMATETC
typedef struct IEnumFORMATETC::tagDVTARGETDEVICE	DVTARGETDEVICE
typedef CLIPFORMAT *	LPCLIPFORMAT
typedef struct IEnumFORMATETC::tagFORMATETC	FORMATETC
typedef struct IEnumFORMATETC::tagFORMATETC *	LPFORMATETC
Public Types inherited from IUnknown
typedef IUnknown *	LPUNKNOWN
Protected Member Functions inherited from IComSrvBase< IEnumFORMATETC, EnumFormatEtcImpl >
	IComSrvBase (REFIID uuid_base)
Protected Member Functions inherited from IComSrvQI< IEnumFORMATETC >
	IComSrvQI ()
virtual	~IComSrvQI ()
Protected Member Functions inherited from ComSrvObject
	ComSrvObject ()
virtual	~ComSrvObject ()
Protected Attributes inherited from IComSrvQI< IEnumFORMATETC >
REFIID	_uuid_base
Protected Attributes inherited from ComSrvObject
ULONG	_ref

Detailed Description

implementation of IEnumFORMATETC interface

Definition at line 27 of file dragdropimpl.h.

Member Typedef Documentation

super

typedef IComSrvBase<IEnumFORMATETC, EnumFormatEtcImpl> EnumFormatEtcImpl::super

private

Definition at line 30 of file dragdropimpl.h.

Constructor & Destructor Documentation

EnumFormatEtcImpl() [1/2]

EnumFormatEtcImpl::EnumFormatEtcImpl

(

const FormatArray &

ArrFE

)

Definition at line 254 of file dragdropimpl.cpp.

 :  super(IID_IEnumFORMATETC),
    m_cRefCount(0),
    m_iCur(0)
{
   for(FormatArray::const_iterator it=ArrFE.begin(); it!=ArrFE.end(); ++it)
        m_pFmtEtc.push_back(*it);
}

Referenced by Clone().

EnumFormatEtcImpl() [2/2]

EnumFormatEtcImpl::EnumFormatEtcImpl

(

const StorageArray &

ArrFE

)

Definition at line 263 of file dragdropimpl.cpp.

 :  super(IID_IEnumFORMATETC),
    m_cRefCount(0),
    m_iCur(0)
{
   for(StorageArray::const_iterator it=ArrFE.begin(); it!=ArrFE.end(); ++it)
        m_pFmtEtc.push_back(*it->_format);
}

~EnumFormatEtcImpl()

virtual EnumFormatEtcImpl::~EnumFormatEtcImpl ( )

inlinevirtual

Definition at line 40 of file dragdropimpl.h.

{}

Member Function Documentation

Clone()

STDMETHODIMP EnumFormatEtcImpl::Clone ( IEnumFORMATETC **  ppCloneEnumFormatEtc )

virtual

Implements IEnumFORMATETC.

Definition at line 311 of file dragdropimpl.cpp.

{
  if (ppCloneEnumFormatEtc == NULL)
    return E_POINTER;

  EnumFormatEtcImpl* newEnum = new EnumFormatEtcImpl(m_pFmtEtc);

  if (!newEnum)
    return E_OUTOFMEMORY;

  newEnum->AddRef();
  newEnum->m_iCur = m_iCur;
  *ppCloneEnumFormatEtc = newEnum;

  return S_OK;
}

Next()

STDMETHODIMP EnumFormatEtcImpl::Next ( ULONG  celt, LPFORMATETC  lpFormatEtc, ULONG *  pceltFetched  )

virtual

Definition at line 272 of file dragdropimpl.cpp.

{
   if (pceltFetched != NULL)
       *pceltFetched=0;

   ULONG cReturn = celt;

   if (celt <= 0 || lpFormatEtc == NULL || m_iCur >= m_pFmtEtc.size())
      return S_FALSE;

   if (pceltFetched == NULL && celt != 1) // pceltFetched can be NULL only for 1 item request
      return S_FALSE;

    while (m_iCur < m_pFmtEtc.size() && cReturn > 0)
    {
        *lpFormatEtc++ = m_pFmtEtc[m_iCur++];
        --cReturn;
    }
    if (pceltFetched != NULL)
        *pceltFetched = celt - cReturn;

    return (cReturn == 0) ? S_OK : S_FALSE;
}

Reset()

STDMETHODIMP EnumFormatEtcImpl::Reset ( void  )

virtual

Implements IEnumFORMATETC.

Definition at line 305 of file dragdropimpl.cpp.

{
   m_iCur = 0;
   return S_OK;
}

Skip()

STDMETHODIMP EnumFormatEtcImpl::Skip ( ULONG  celt )

virtual

Implements IEnumFORMATETC.

Definition at line 296 of file dragdropimpl.cpp.

{
    if ((m_iCur + int(celt)) >= m_pFmtEtc.size())
        return S_FALSE;

    m_iCur += celt;
    return S_OK;
}

Member Data Documentation

m_cRefCount

ULONG EnumFormatEtcImpl::m_cRefCount

private

Definition at line 33 of file dragdropimpl.h.

m_iCur

size_t EnumFormatEtcImpl::m_iCur

private

Definition at line 35 of file dragdropimpl.h.

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

m_pFmtEtc

FormatArray EnumFormatEtcImpl::m_pFmtEtc

private

Definition at line 34 of file dragdropimpl.h.

Referenced by Clone(), EnumFormatEtcImpl(), Next(), and Skip().

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

• modules/rosapps/applications/explorer-old/utility/dragdropimpl.h
• modules/rosapps/applications/explorer-old/utility/dragdropimpl.cpp