Leaked source code of windows server 2003
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/////////////////////////////////////////////////////////////////////////////
//
// propertybag2impl.h : helper functions for implementing IPropertyBag2
// Copyright (c) Microsoft Corporation 1999.
//
// this code assumes that you're also implementing IPropertyBag and reflects
// bag2's read/write to bag's read/write
//
template <class T>
class ATL_NO_VTABLE IPropertyBag2Impl : public IPropertyBag2
{
// IPropertyBag2
STDMETHOD(Read)(ULONG cProperties, PROPBAG2* pPropBag, IErrorLog* pErrLog, VARIANT* pvarValue, HRESULT* phrError) {
HRESULT hrc = NOERROR;
if (!phrError || !pPropBag) {
return E_POINTER;
}
try {
ATL_LOCKT();
for (ULONG i = 0; i < cProperties; ++i) {
phrError[i] = pT->Read(pPropBag[i].pstrName, pvarValue + i, pErrLog);
if (FAILED(phrError[i])) {
hrc = E_FAIL;
}
}
return hrc;
} catch (...) {
return E_UNEXPECTED;
}
}
STDMETHOD(Write)(ULONG cProperties, PROPBAG2* pPropBag, VARIANT* pvarValue) {
HRESULT hrc = NOERROR;
if (!pvarValue || !pPropBag) {
return E_POINTER;
}
try {
ATL_LOCKT();
for (ULONG i = 0; i < cProperties; ++i) {
VARIANT *pVAR = pvarValue + i;
LPCOLESTR s = pPropBag[i].pstrName;
HRESULT hr = pT->Write(s, pVAR);
if (FAILED(hr)) {
hrc = E_FAIL;
}
}
return hrc;
} catch (...) {
return E_UNEXPECTED;
}
}
};