74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
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// srvcutil.cpp
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#include "precomp.h"
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/* B S T R _ T O _ L P T S T R */
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/*-------------------------------------------------------------------------
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%%Function: BSTR_to_LPTSTR
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-------------------------------------------------------------------------*/
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HRESULT BSTR_to_LPTSTR(LPTSTR *ppsz, BSTR bstr)
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{
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#ifndef UNICODE
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// compute the length of the required BSTR
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int cch = WideCharToMultiByte(CP_ACP, 0, (LPWSTR)bstr, -1, NULL, 0, NULL, NULL);
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if (cch <= 0)
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{
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ERROR_OUT(("WideCharToMultiByte failed"));
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return E_FAIL;
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}
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// cch is the number of BYTES required, including the null terminator
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*ppsz = (LPTSTR) new char[cch];
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if (*ppsz == NULL)
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{
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ERROR_OUT(("WideCharToMultiByte out of memory"));
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return E_OUTOFMEMORY;
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}
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WideCharToMultiByte(CP_ACP, 0, (LPWSTR)bstr, -1, *ppsz, cch, NULL, NULL);
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return S_OK;
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#else
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return E_NOTIMPL;
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#endif // UNICODE
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}
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/////////////////////////////////////////////////////////////////////////////
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// Connection Point Helpers
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HRESULT NmAdvise(IUnknown* pUnkCP, IUnknown* pUnk, const IID& iid, LPDWORD pdw)
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{
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IConnectionPointContainer *pCPC;
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IConnectionPoint *pCP;
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HRESULT hRes = pUnkCP->QueryInterface(IID_IConnectionPointContainer, (void**)&pCPC);
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if (SUCCEEDED(hRes))
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{
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hRes = pCPC->FindConnectionPoint(iid, &pCP);
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pCPC->Release();
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}
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if (SUCCEEDED(hRes))
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{
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hRes = pCP->Advise(pUnk, pdw);
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pCP->Release();
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}
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return hRes;
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}
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HRESULT NmUnadvise(IUnknown* pUnkCP, const IID& iid, DWORD dw)
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{
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IConnectionPointContainer *pCPC;
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IConnectionPoint *pCP;
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HRESULT hRes = pUnkCP->QueryInterface(IID_IConnectionPointContainer, (void**)&pCPC);
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if (SUCCEEDED(hRes))
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{
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hRes = pCPC->FindConnectionPoint(iid, &pCP);
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pCPC->Release();
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}
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if (SUCCEEDED(hRes))
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{
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hRes = pCP->Unadvise(dw);
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pCP->Release();
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}
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return hRes;
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}
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