94 lines
1.9 KiB
C++
94 lines
1.9 KiB
C++
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// EnumTASK.cpp: implementation of the CEnumTASK class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "EnumTASK.h"
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CEnumTASK::CEnumTASK(MMC_TASK *pTaskList, ULONG nTasks)
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: m_pTaskList(pTaskList), m_TaskCount(nTasks), m_CurrTask(0)
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{
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}
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CEnumTASK::~CEnumTASK()
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{
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if (m_pTaskList)
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delete [] m_pTaskList;
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}
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STDMETHODIMP CEnumTASK::QueryInterface(REFIID riid, LPVOID *ppv)
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{
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if (!ppv)
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return E_FAIL;
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*ppv = NULL;
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if (IsEqualIID(riid, IID_IUnknown))
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*ppv = static_cast<IEnumTASK *>(this);
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else if (IsEqualIID(riid, IID_IEnumTASK))
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*ppv = static_cast<IEnumTASK *>(this);
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if (*ppv)
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{
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reinterpret_cast<IUnknown *>(*ppv)->AddRef();
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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STDMETHODIMP_(ULONG) CEnumTASK::AddRef()
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{
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return InterlockedIncrement((LONG *)&m_cref);
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}
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STDMETHODIMP_(ULONG) CEnumTASK::Release()
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{
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if (InterlockedDecrement((LONG *)&m_cref) == 0)
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{
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delete this;
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return 0;
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}
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return m_cref;
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}
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HRESULT CEnumTASK::Next(
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/* [in] */ ULONG celt,
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/* [length_is][size_is][out] */ MMC_TASK __RPC_FAR *rgelt,
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/* [out] */ ULONG __RPC_FAR *pceltFetched)
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{
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*pceltFetched = 0;
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if (m_CurrTask < m_TaskCount) {
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if (rgelt != NULL) {
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CopyMemory(rgelt, &m_pTaskList[m_CurrTask++], sizeof(MMC_TASK));
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*pceltFetched = 1;
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}
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}
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return (*pceltFetched != 0) ? S_OK : S_FALSE;
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}
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HRESULT CEnumTASK::Skip(
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/* [in] */ ULONG celt)
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{
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return E_NOTIMPL;
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}
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HRESULT CEnumTASK::Reset( void)
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{
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m_CurrTask = 0;
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return S_OK;
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}
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HRESULT CEnumTASK::Clone(
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/* [out] */ IEnumTASK __RPC_FAR *__RPC_FAR *ppenum)
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{
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return E_NOTIMPL;
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}
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