QOleEnumFmtEtc Class Reference

#include <qdnd_p.h>

Inheritance diagram for QOleEnumFmtEtc:

Public Functions
STDMETHOD()	Clone (LPENUMFORMATETC FAR *newEnum)
bool	isNull () const
STDMETHOD()	Next (ULONG celt, LPFORMATETC rgelt, ULONG FAR *pceltFetched)
	QOleEnumFmtEtc (const QVector< FORMATETC > &fmtetcs)
	QOleEnumFmtEtc (const QVector< LPFORMATETC > &lpfmtetcs)
STDMETHOD()	QueryInterface (REFIID riid, void FAR *FAR *ppvObj)
STDMETHOD()	Reset (void)
STDMETHOD()	Skip (ULONG celt)
	STDMETHOD_ (ULONG, AddRef)(void)
	STDMETHOD_ (ULONG, Release)(void)
virtual	~QOleEnumFmtEtc ()

Private Functions
bool	copyFormatEtc (LPFORMATETC dest, LPFORMATETC src) const

Properties
ULONG	m_dwRefs
bool	m_isNull
QVector< LPFORMATETC >	m_lpfmtetcs
ULONG	m_nIndex

Detailed Description

Definition at line 139 of file qdnd_p.h.

Constructors and Destructors

QOleEnumFmtEtc() [1/2]

QOleEnumFmtEtc::QOleEnumFmtEtc ( const QVector< FORMATETC > &  fmtetcs )

explicit

Definition at line 53 of file qole_win.cpp.

Referenced by Clone().

{
    m_isNull = false;
    m_dwRefs = 1;
    m_nIndex = 0;

    for (int idx = 0; idx < fmtetcs.count(); ++idx) {
        LPFORMATETC destetc = new FORMATETC();
        if (copyFormatEtc(destetc, (LPFORMATETC)&(fmtetcs.at(idx)))) {
            m_lpfmtetcs.append(destetc);
        } else {
            m_isNull = true;
            delete destetc;
            break;
        }
    }
}

QOleEnumFmtEtc() [2/2]

QOleEnumFmtEtc::QOleEnumFmtEtc ( const QVector< LPFORMATETC > &  lpfmtetcs )

explicit

Definition at line 71 of file qole_win.cpp.

{
    m_isNull = false;
    m_dwRefs = 1;
    m_nIndex = 0;

    for (int idx = 0; idx < lpfmtetcs.count(); ++idx) {
        LPFORMATETC srcetc = lpfmtetcs.at(idx);
        LPFORMATETC destetc = new FORMATETC();
        if (copyFormatEtc(destetc, srcetc)) {
            m_lpfmtetcs.append(destetc);
        } else {
            m_isNull = true;
            delete destetc;
            break;
        }
    }
}

~QOleEnumFmtEtc()

QOleEnumFmtEtc::~QOleEnumFmtEtc ( )

virtual

Definition at line 90 of file qole_win.cpp.

{
    LPMALLOC pmalloc;

#if !defined(Q_OS_WINCE)
    if (CoGetMalloc(MEMCTX_TASK, &pmalloc) == NOERROR) {
#else
    if (SHGetMalloc(&pmalloc) == NOERROR) {
#endif
        for (int idx = 0; idx < m_lpfmtetcs.count(); ++idx) {
            LPFORMATETC tmpetc = m_lpfmtetcs.at(idx);
            if (tmpetc->ptd)
                pmalloc->Free(tmpetc->ptd);
            delete tmpetc;
        }

        pmalloc->Release();
    }
    m_lpfmtetcs.clear();
}

Functions

Clone()

STDMETHODIMP QOleEnumFmtEtc::Clone

(

LPENUMFORMATETC FAR *

newEnum

)

Definition at line 209 of file qole_win.cpp.

{
    if (newEnum == NULL)
        return ResultFromScode(E_INVALIDARG);

    QOleEnumFmtEtc *result = new QOleEnumFmtEtc(m_lpfmtetcs);
    result->m_nIndex = m_nIndex;

    if (result->isNull()) {
        delete result;
        return ResultFromScode(E_OUTOFMEMORY);
    } else {
        *newEnum = result;
    }

    return NOERROR;
}

copyFormatEtc()

bool QOleEnumFmtEtc::copyFormatEtc ( LPFORMATETC  dest, LPFORMATETC  src  ) const

private

Definition at line 227 of file qole_win.cpp.

Referenced by Next(), and QOleEnumFmtEtc().

{
    if (dest == NULL || src == NULL)
        return false;

    *dest = *src;

    if (src->ptd) {
        LPMALLOC pmalloc;

#if !defined(Q_OS_WINCE)
        if (CoGetMalloc(MEMCTX_TASK, &pmalloc) != NOERROR)
#else
        if (SHGetMalloc(&pmalloc) != NOERROR)
#endif
            return false;

        pmalloc->Alloc(src->ptd->tdSize);
        memcpy(dest->ptd, src->ptd, size_t(src->ptd->tdSize));

        pmalloc->Release();
    }

    return true;
}

isNull()

bool QOleEnumFmtEtc::isNull

(

)

const

Definition at line 111 of file qole_win.cpp.

Referenced by Clone(), and QOleDataObject::EnumFormatEtc().

{
    return m_isNull;
}

Next()

STDMETHODIMP QOleEnumFmtEtc::Next	(	ULONG	celt,
		LPFORMATETC	rgelt,
		ULONG FAR *	pceltFetched
	)

Definition at line 147 of file qole_win.cpp.

{
    ULONG i=0;
    ULONG nOffset;

    if (rgelt == NULL)
        return ResultFromScode(E_INVALIDARG);

    while (i < celt) {
        nOffset = m_nIndex + i;

        if (nOffset < ULONG(m_lpfmtetcs.count())) {
            copyFormatEtc((LPFORMATETC)&(rgelt[i]), m_lpfmtetcs.at(nOffset));
            i++;
        } else {
            break;
        }
    }

    m_nIndex += (WORD)i;

    if (pceltFetched != NULL)
        *pceltFetched = i;

    if (i != celt)
        return ResultFromScode(S_FALSE);

    return NOERROR;
}

QueryInterface()

STDMETHODIMP QOleEnumFmtEtc::QueryInterface	(	REFIID	riid,
		void FAR *FAR *	ppvObj
	)

Definition at line 118 of file qole_win.cpp.

{
    if (riid == IID_IUnknown || riid == IID_IEnumFORMATETC) {
        *ppvObj = this;
        AddRef();
        return NOERROR;
    }
    *ppvObj = NULL;
    return ResultFromScode(E_NOINTERFACE);
}

Reset()

STDMETHODIMP QOleEnumFmtEtc::Reset

(

void

)

Definition at line 202 of file qole_win.cpp.

{
    m_nIndex = 0;
    return NOERROR;
}

Skip()

STDMETHODIMP QOleEnumFmtEtc::Skip

(

ULONG

celt

)

Definition at line 178 of file qole_win.cpp.

{
    ULONG i=0;
    ULONG nOffset;

    while (i < celt) {
        nOffset = m_nIndex + i;

        if (nOffset < ULONG(m_lpfmtetcs.count())) {
            i++;
        } else {
            break;
        }
    }

    m_nIndex += (WORD)i;

    if (i != celt)
        return ResultFromScode(S_FALSE);

    return NOERROR;
}

STDMETHOD_() [1/2]

QOleEnumFmtEtc::STDMETHOD_	(	ULONG	,
		AddRef
	)

STDMETHOD_() [2/2]

QOleEnumFmtEtc::STDMETHOD_	(	ULONG	,
		Release
	)

Properties

m_dwRefs

ULONG QOleEnumFmtEtc::m_dwRefs

private

Definition at line 162 of file qdnd_p.h.

Referenced by QOleEnumFmtEtc(), and QueryInterface().

m_isNull

bool QOleEnumFmtEtc::m_isNull

private

Definition at line 165 of file qdnd_p.h.

Referenced by isNull(), and QOleEnumFmtEtc().

m_lpfmtetcs

QVector<LPFORMATETC> QOleEnumFmtEtc::m_lpfmtetcs

private

Definition at line 164 of file qdnd_p.h.

Referenced by Clone(), Next(), QOleEnumFmtEtc(), Skip(), and ~QOleEnumFmtEtc().

m_nIndex

ULONG QOleEnumFmtEtc::m_nIndex

private

Definition at line 163 of file qdnd_p.h.

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

---

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

• /src/gui/kernel/qdnd_p.h
• /src/gui/kernel/qole_win.cpp