/*
 * IDATAOBJ.H
 *
 * Definitions of a template IDataObject interface implementation.
 *
 * Copyright (c)1993-1994 Microsoft Corporation, All Right Reserved
 *
 * Kraig Brockschmidt, Software Design Engineer
 * Microsoft Systems Developer Relations
 *
 * Internet  :  kraigb@microsoft.com
 * Compuserve:  >INTERNET:kraigb@microsoft.com
 */


#ifndef _IDATAOBJ_H_
#define _IDATAOBJ_H_

class CImpIDataObject;
typedef class CImpIDataObject *PIMPIDATAOBJECT;

class CImpIDataObject : public IDataObject
    {
    private:
        ULONG           m_cRef;      //Interface reference count
        LPVOID          m_pObj;      //Back pointer to the object
        LPUNKNOWN       m_pUnkOuter; //For delegation

    public:
        CImpIDataObject(LPVOID, LPUNKNOWN);
        ~CImpIDataObject(void);

        //IUnknown members that delegate to m_pUnkOuter.
        STDMETHODIMP         QueryInterface(REFIID, LPVOID *);
        STDMETHODIMP_(ULONG) AddRef(void);
        STDMETHODIMP_(ULONG) Release(void);

        //IDataObject members
        STDMETHODIMP GetData(LPFORMATETC, LPSTGMEDIUM);
        STDMETHODIMP GetDataHere(LPFORMATETC, LPSTGMEDIUM);
        STDMETHODIMP QueryGetData(LPFORMATETC);
        STDMETHODIMP GetCanonicalFormatEtc(LPFORMATETC
            , LPFORMATETC);
        STDMETHODIMP SetData(LPFORMATETC, LPSTGMEDIUM, BOOL);
        STDMETHODIMP EnumFormatEtc(DWORD, LPENUMFORMATETC *);
        STDMETHODIMP DAdvise(LPFORMATETC, DWORD
            ,  LPADVISESINK, DWORD *);
        STDMETHODIMP DUnadvise(DWORD);
        STDMETHODIMP EnumDAdvise(LPENUMSTATDATA *);
    };


#endif //_IDATAOBJ_H_
