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#include "datausr.h"
HRESULT
GetStgMedpUnkForRelease(IUnknown **pp_unk)
{
CStgMedIf *p_smi = new CStgMedIf();
HRESULT hr = p_smi->QueryInterface(IID_IUnknown, (PPVOID)pp_unk);
return hr;
}
CStgMedIf::CStgMedIf()
{
m_cRef = 0;
}
STDMETHODIMP
CStgMedIf::QueryInterface(
REFIID riid,
LPLPVOID ppv
)
{
*ppv = NULL;
if (IsEqualIID(riid, IID_IUnknown))
{
*ppv = (LPVOID)this;
((LPUNKNOWN)*ppv)->AddRef();
return NOERROR;
}
return ResultFromScode(E_NOINTERFACE);
}
STDMETHODIMP_(ULONG)
CStgMedIf::AddRef(void)
{
return ++m_cRef;
}
STDMETHODIMP_(ULONG)
CStgMedIf::Release(void)
{
ULONG cRefT;
cRefT = --m_cRef;
if (0==cRefT)
{
TCHAR chBuf[80];
wsprintf(chBuf, TEXT("Reference Count is %d"), cRefT);
MessageBox(0,
chBuf,
TEXT("STGMED pUnkForRelease"),
MB_OK);
delete this;
}
return cRefT;
}
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