关于Wab32的一个方法
这段代码执行的结果是DeleteEntries失败。我想把这个Wab文件里的联系人清空。请做过类似项目的人帮我。谢谢

C/C++ code

HRESULT CWAB::DeleteEntry(){    HRESULT hr = hrSuccess;    ULONG cbWABEID = 0;    LPENTRYID lpWABEID = NULL;    LPABCONT lpWABCont = NULL;    ULONG ulObjType;    SBinaryArray SBA;    hr = m_lpAdrBook->GetPAB( &cbWABEID, &lpWABEID);    if(HR_FAILED(hr))        goto out;    hr = m_lpAdrBook->OpenEntry(cbWABEID, lpWABEID, NULL, 0, &ulObjType, (LPUNKNOWN *)&lpWABCont);    if(HR_FAILED(hr))        goto out;    SBA.cValues = 1;    SBA.lpbin = &m_SB;    hr = lpWABCont->DeleteEntries((LPENTRYLIST) &SBA, 0);    if(m_lpPropArray)        m_lpWABObject->FreeBuffer(m_lpPropArray);    m_lpPropArray = NULL;    m_ulcValues = 0;out:    if(lpWABCont)        lpWABCont->Release();    if(lpWABEID)        m_lpWABObject->FreeBuffer(lpWABEID);    return hr;}