116 lines
2.1 KiB
C++
116 lines
2.1 KiB
C++
//____________________________________________________________________________
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1996 - 1999
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//
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// File: ScopIter.cpp
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//
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// Contents:
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//
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// Classes:
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//
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// Functions:
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//
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// History:
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//____________________________________________________________________________
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//
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#include "stdafx.h"
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#include "scopiter.h"
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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DEBUG_DECLARE_INSTANCE_COUNTER(CScopeTreeIterator);
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CScopeTreeIterator::CScopeTreeIterator() : m_pMTNodeCurr(NULL)
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{
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DEBUG_INCREMENT_INSTANCE_COUNTER(CScopeTreeIterator);
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}
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CScopeTreeIterator::~CScopeTreeIterator()
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{
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DEBUG_DECREMENT_INSTANCE_COUNTER(CScopeTreeIterator);
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}
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STDMETHODIMP CScopeTreeIterator::SetCurrent(HMTNODE hMTNode)
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{
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MMC_TRY
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if (hMTNode == 0)
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return E_INVALIDARG;
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m_pMTNodeCurr = CMTNode::FromHandle(hMTNode);
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return S_OK;
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MMC_CATCH
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}
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STDMETHODIMP CScopeTreeIterator::Next(UINT nRequested, HMTNODE* rghScopeItems,
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UINT* pnFetched)
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{
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MMC_TRY
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if (rghScopeItems == NULL || pnFetched == NULL)
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return E_POINTER;
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*pnFetched = 0; // init
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if (nRequested == 0)
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return S_OK;
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int i = 0;
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CMTNode** rgpMTNodes = reinterpret_cast<CMTNode**>(rghScopeItems);
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while (m_pMTNodeCurr != NULL && nRequested--)
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{
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rgpMTNodes[i++] = m_pMTNodeCurr;
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m_pMTNodeCurr = m_pMTNodeCurr->Next();
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}
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*pnFetched = i;
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return S_OK;
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MMC_CATCH
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}
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STDMETHODIMP CScopeTreeIterator::Child(HMTNODE* phsiChild)
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{
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MMC_TRY
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if (phsiChild == NULL)
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return E_POINTER;
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*phsiChild = 0; // init
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if (m_pMTNodeCurr != NULL)
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*phsiChild = CMTNode::ToHandle(m_pMTNodeCurr->Child());
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return S_OK;
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MMC_CATCH
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}
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STDMETHODIMP CScopeTreeIterator::Parent(HMTNODE* phsiParent)
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{
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MMC_TRY
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if (phsiParent == NULL)
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return E_POINTER;
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*phsiParent = 0; // init
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if (m_pMTNodeCurr != NULL)
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*phsiParent = CMTNode::ToHandle(m_pMTNodeCurr->Child());
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return S_OK;
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MMC_CATCH
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}
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