57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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//
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// propertybag2impl.h : helper functions for implementing IPropertyBag2
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// Copyright (c) Microsoft Corporation 1999.
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//
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// this code assumes that you're also implementing IPropertyBag and reflects
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// bag2's read/write to bag's read/write
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//
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template <class T>
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class ATL_NO_VTABLE IPropertyBag2Impl : public IPropertyBag2
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{
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// IPropertyBag2
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STDMETHOD(Read)(ULONG cProperties, PROPBAG2* pPropBag, IErrorLog* pErrLog, VARIANT* pvarValue, HRESULT* phrError) {
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HRESULT hrc = NOERROR;
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if (!phrError || !pPropBag) {
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return E_POINTER;
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}
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try {
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ATL_LOCKT();
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for (ULONG i = 0; i < cProperties; ++i) {
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phrError[i] = pT->Read(pPropBag[i].pstrName, pvarValue + i, pErrLog);
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if (FAILED(phrError[i])) {
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hrc = E_FAIL;
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}
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}
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return hrc;
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} catch (...) {
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return E_UNEXPECTED;
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}
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}
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STDMETHOD(Write)(ULONG cProperties, PROPBAG2* pPropBag, VARIANT* pvarValue) {
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HRESULT hrc = NOERROR;
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if (!pvarValue || !pPropBag) {
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return E_POINTER;
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}
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try {
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ATL_LOCKT();
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for (ULONG i = 0; i < cProperties; ++i) {
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VARIANT *pVAR = pvarValue + i;
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LPCOLESTR s = pPropBag[i].pstrName;
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HRESULT hr = pT->Write(s, pVAR);
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if (FAILED(hr)) {
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hrc = E_FAIL;
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}
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}
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return hrc;
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} catch (...) {
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return E_UNEXPECTED;
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}
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}
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};
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