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48 lines
1.5 KiB
48 lines
1.5 KiB
/*****************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 2000
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*
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* TITLE: WiaEvent.h
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*
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* VERSION: 1.0
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*
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* DATE: 2000/11/14
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*
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* DESCRIPTION: Implements callback for receiving WIA events.
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*
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*****************************************************************************/
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#ifndef _WIAEVENT_H_
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#define _WIAEVENT_H_
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class CWiaEvent : public IWiaEventCallback
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{
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public:
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CWiaEvent();
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~CWiaEvent();
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// IUnknown
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STDMETHODIMP QueryInterface( REFIID riid, LPVOID *ppvObject );
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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//IWiaEventCallback
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STDMETHODIMP ImageEventCallback(const GUID *pEventGUID,
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BSTR bstrEventDescription,
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BSTR bstrDeviceID,
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BSTR bstrDeviceDescription,
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DWORD dwDeviceType,
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BSTR bstrFullItemName,
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ULONG *pulEventType,
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ULONG ulReserved);
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static HRESULT RegisterForWiaEvent(LPCWSTR pwszDeviceId,
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const GUID &guidEvent,
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IUnknown **ppUnknown);
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private:
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LONG m_cRef;
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};
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#endif //_WIAEVENT_H_
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