131 lines
2.8 KiB
C++
131 lines
2.8 KiB
C++
#include "DataStoreCOM.h"
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enum
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{
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DISP_DATASTORE_STORE,
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DISP_DATASTORE_RETRIEVE,
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DISP_DATASTORE_GENERATE_GUID,
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};
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#define CHECK_ID(str, id)\
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if (CSTR_EQUAL == CompareStringW(lcid, NORM_IGNORECASE, rgszNames[i], -1, L##str, -1))\
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{ rgdispid[i] = id; continue; }
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HRESULT DataStoreCOM::GetIDsOfNames(REFIID riid, OLECHAR FAR* FAR* rgszNames, unsigned int cNames, LCID lcid, DISPID FAR* rgdispid)
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{
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bool unknowns = false;
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for (unsigned int i = 0;i != cNames;i++)
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{
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CHECK_ID("Store", DISP_DATASTORE_STORE);
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CHECK_ID("Retrieve", DISP_DATASTORE_RETRIEVE);
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CHECK_ID("GenerateGUID", DISP_DATASTORE_GENERATE_GUID);
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rgdispid[i] = DISPID_UNKNOWN;
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unknowns = true;
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}
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if (unknowns)
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return DISP_E_UNKNOWNNAME;
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else
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return S_OK;
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}
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HRESULT DataStoreCOM::GetTypeInfo(unsigned int itinfo, LCID lcid, ITypeInfo FAR* FAR* pptinfo)
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{
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return E_NOTIMPL;
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}
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HRESULT DataStoreCOM::GetTypeInfoCount(unsigned int FAR * pctinfo)
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{
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return E_NOTIMPL;
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}
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HRESULT DataStoreCOM::Invoke(DISPID dispid, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS FAR *pdispparams, VARIANT FAR *pvarResult, EXCEPINFO FAR * pexecinfo, unsigned int FAR *puArgErr)
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{
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switch (dispid)
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{
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case DISP_DATASTORE_GENERATE_GUID:
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{
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GUID guid;
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UuidCreate(&guid);
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wchar_t *guid_string;
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UuidToStringW(&guid, (unsigned short **)&guid_string);
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BSTR tag = SysAllocString(guid_string);
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RpcStringFreeW((unsigned short **)&guid_string);
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VariantInit(pvarResult);
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V_VT(pvarResult) = VT_BSTR;
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V_BSTR(pvarResult) = tag;
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return S_OK;
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}
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case DISP_DATASTORE_STORE:
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if (pdispparams->cArgs == 2)
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{
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GUID guid;
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UuidFromStringW((unsigned short *)pdispparams->rgvarg[1].bstrVal, &guid);
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SAFEARRAY *bufferArray=pdispparams->rgvarg[0].parray;
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SAFEARRAY *store;
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HRESULT hr = SafeArrayCopy(bufferArray, &store);
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dataStore[guid]=store;
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return hr;
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}
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else
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return DISP_E_BADPARAMCOUNT;
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case DISP_DATASTORE_RETRIEVE:
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if (pdispparams->cArgs == 1)
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{
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GUID guid;
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UuidFromStringW((unsigned short *)pdispparams->rgvarg[0].bstrVal, &guid);
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SAFEARRAY *store = dataStore[guid];
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if (store)
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{
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SAFEARRAY *bufferArray;
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SafeArrayCopy(store, &bufferArray);
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VariantInit(pvarResult);
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V_VT(pvarResult) = VT_ARRAY|VT_UI1;
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V_ARRAY(pvarResult) = bufferArray;
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return S_OK;
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}
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else
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return E_FAIL;
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}
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else
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return DISP_E_BADPARAMCOUNT;
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}
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return DISP_E_MEMBERNOTFOUND;
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}
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STDMETHODIMP DataStoreCOM::QueryInterface(REFIID riid, PVOID *ppvObject)
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{
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if (!ppvObject)
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return E_POINTER;
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else if (IsEqualIID(riid, IID_IDispatch))
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*ppvObject = (IDispatch *)this;
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else if (IsEqualIID(riid, IID_IUnknown))
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*ppvObject = this;
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else
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{
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*ppvObject = NULL;
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return E_NOINTERFACE;
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}
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AddRef();
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return S_OK;
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}
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ULONG DataStoreCOM::AddRef(void)
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{
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return 0;
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}
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ULONG DataStoreCOM::Release(void)
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{
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return 0;
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}
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