143 lines
3.5 KiB
C++
143 lines
3.5 KiB
C++
/*++
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Copyright (C) 1996-1999 Microsoft Corporation
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Module Name:
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dispatch.cpp
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Abstract:
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<abstract>
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--*/
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#include "polyline.h"
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#include "unkhlpr.h"
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extern ITypeLib *g_pITypeLib;
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extern DWORD g_dwScriptPolicy;
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//IDispatch interface implementation
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IMPLEMENT_CONTAINED_INTERFACE(IUnknown, CImpIDispatch)
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/*
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* CImpIDispatch::GetTypeInfoCount
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* CImpIDispatch::GetTypeInfo
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* CImpIDispatch::GetIDsOfNames
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*
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* The usual
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*/
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void CImpIDispatch::SetInterface(REFIID riid, LPUNKNOWN pIUnk)
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{
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m_DIID = riid;
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m_pInterface = pIUnk;
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}
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STDMETHODIMP CImpIDispatch::GetTypeInfoCount(UINT *pctInfo)
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{
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//We implement GetTypeInfo so return 1
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*pctInfo=1;
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return NOERROR;
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}
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STDMETHODIMP CImpIDispatch::GetTypeInfo(UINT itInfo, LCID /* lcid */
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, ITypeInfo **ppITypeInfo)
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{
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if (0!=itInfo)
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return ResultFromScode(TYPE_E_ELEMENTNOTFOUND);
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if (NULL==ppITypeInfo)
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return ResultFromScode(E_POINTER);
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*ppITypeInfo=NULL;
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//We ignore the LCID
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return g_pITypeLib->GetTypeInfoOfGuid(m_DIID, ppITypeInfo);
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}
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STDMETHODIMP CImpIDispatch::GetIDsOfNames(REFIID riid
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, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID *rgDispID)
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{
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HRESULT hr;
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ITypeInfo *pTI;
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if (IID_NULL!=riid)
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return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
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hr=GetTypeInfo(0, lcid, &pTI);
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if (SUCCEEDED(hr))
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{
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hr = DispGetIDsOfNames(pTI, rgszNames, cNames, rgDispID);
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pTI->Release();
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}
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return hr;
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}
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/*
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* CImpIDispatch::Invoke
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*
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* Purpose:
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* Calls a method in the dispatch interface or manipulates a
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* property.
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*
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* Parameters:
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* dispID DISPID of the method or property of interest.
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* riid REFIID reserved, must be IID_NULL.
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* lcid LCID of the locale.
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* wFlags USHORT describing the context of the invocation.
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* pDispParams DISPPARAMS * to the array of arguments.
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* pVarResult VARIANT * in which to store the result. Is
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* NULL if the caller is not interested.
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* pExcepInfo EXCEPINFO * to exception information.
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* puArgErr UINT * in which to store the index of an
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* invalid parameter if DISP_E_TYPEMISMATCH
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* is returned.
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*
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* Return Value:
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* HRESULT NOERROR or a general error code.
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*/
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STDMETHODIMP CImpIDispatch::Invoke(DISPID dispID, REFIID riid
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, LCID lcid, unsigned short wFlags, DISPPARAMS *pDispParams
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, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
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{
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HRESULT hr;
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ITypeInfo *pTI;
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//riid is supposed to be IID_NULL always
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if (IID_NULL != riid)
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return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
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if (g_dwScriptPolicy == URLPOLICY_DISALLOW) {
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if (m_DIID == DIID_DISystemMonitor)
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return E_ACCESSDENIED;
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}
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// if dispatching to the graph control, use our internal interface
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// that is generated from the direct interface (see smonctrl.odl)
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if (m_DIID == DIID_DISystemMonitor)
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hr = g_pITypeLib->GetTypeInfoOfGuid(DIID_DISystemMonitorInternal, &pTI);
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else
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hr = GetTypeInfo(0, lcid, &pTI);
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if (FAILED(hr))
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return hr;
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hr = pTI->Invoke(m_pInterface, dispID, wFlags
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, pDispParams, pVarResult, pExcepInfo, puArgErr);
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pTI->Release();
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return hr;
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}
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