48 lines
1.8 KiB
C++
48 lines
1.8 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1993 - 1999.
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//
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// File: CIDispatchHelper.h
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//
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// Contents: class defintion for CIDispatchHelper, a helper class to share code
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// for the IDispatch implementation that others can inherit from.
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//
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//----------------------------------------------------------------------------
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#ifndef _CIDISPATCHHELPER_H_
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#define _CIDISPATCHHELPER_H_
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class CIDispatchHelper
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{
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public:
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// we need access to the virtual QI -- define it PURE here
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virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj) PURE;
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protected:
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// *** IDispatch methods ***
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STDMETHODIMP GetTypeInfoCount(UINT* pctinfo);
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STDMETHODIMP GetTypeInfo(UINT itinfo, LCID lcid, ITypeInfo** pptinfo);
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STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR** rgszNames, UINT cNames, LCID lcid, DISPID* rgdispid);
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STDMETHODIMP Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS* pdispparams, VARIANT* pvarResult, EXCEPINFO* pexcepinfo, UINT* puArgErr);
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// helper function to get a ITypeInfo uuid/lcid out of the type library
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HRESULT _LoadTypeInfo(const GUID* rguidTypeLib, LCID lcid, UUID uuid, ITypeInfo** ppITypeInfo);
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CIDispatchHelper(const IID* piid, const IID* piidTypeLib);
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~CIDispatchHelper(void);
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private:
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const IID* _piid; // guid that this IDispatch implementation is for
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const IID* _piidTypeLib; // guid that specifies which TypeLib to load
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IDispatch* _pdisp;
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ITypeInfo* _pITINeutral; // cached Type information
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};
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#endif // _CIDISPATCHHELPER_H_
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