xingzhe

版权声明：转载时请以超链接形式标明文章原始出处和作者信息及本声明
http://xingzhesun.blogbus.com/logs/40848877.html

/////////////////////////////////////////////////////////////////////////////
// Connection Point Helpers

ATLINLINE ATLAPI AtlAdvise(IUnknown* pUnkCP, IUnknown* pUnk, const IID& iid, LPDWORD pdw)
{
 if(pUnkCP == NULL)
  return E_INVALIDARG;
  
 CComPtr<IConnectionPointContainer> pCPC;
 CComPtr<IConnectionPoint> pCP;
 HRESULT hRes = pUnkCP->QueryInterface(__uuidof(IConnectionPointContainer), (void**)&pCPC);
 if (SUCCEEDED(hRes))
  hRes = pCPC->FindConnectionPoint(iid, &pCP);
 if (SUCCEEDED(hRes))
  hRes = pCP->Advise(pUnk, pdw);
 return hRes;
}

/////////////////////////////////////////////////////////////////////////////
ATLINLINE ATLAPI AtlUnadvise(IUnknown* pUnkCP, const IID& iid, DWORD dw)
{
 if(pUnkCP == NULL)
  return E_INVALIDARG;
  
 CComPtr<IConnectionPointContainer> pCPC;
 CComPtr<IConnectionPoint> pCP;
 HRESULT hRes = pUnkCP->QueryInterface(__uuidof(IConnectionPointContainer), (void**)&pCPC);
 if (SUCCEEDED(hRes))
  hRes = pCPC->FindConnectionPoint(iid, &pCP);
 if (SUCCEEDED(hRes))
  hRes = pCP->Unadvise(dw);
 return hRes;