127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
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//____________________________________________________________________________
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997 - 1999
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//
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// File: objfmts.h
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//
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// Contents:
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//
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// Classes:
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//
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// Functions:
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//
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// History: 6/12/1997 RaviR Created
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//____________________________________________________________________________
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//
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#ifndef _OBJFMTS_H_
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#define _OBJFMTS_H_
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HRESULT GetObjFormats(UINT cfmt, FORMATETC *afmt, LPVOID *ppvObj);
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HRESULT GetObjFormatsEx(IEnumFORMATETC* pEnum1, IEnumFORMATETC* pEnum2,
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IEnumFORMATETC** ppEnumOut);
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//____________________________________________________________________________
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//
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// Class: CObjFormats
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//
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// Purpose: Impements IEnumFORMATETC for objects.
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//____________________________________________________________________________
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class CObjFormats : public IEnumFORMATETC,
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public CComObjectRoot
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{
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public:
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// ATL Maps
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DECLARE_NOT_AGGREGATABLE(CObjFormats)
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BEGIN_COM_MAP(CObjFormats)
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COM_INTERFACE_ENTRY(IEnumFORMATETC)
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END_COM_MAP()
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public:
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CObjFormats() : m_iFmt(0), m_cFmt(0), m_aFmt(NULL)
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{
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}
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~CObjFormats() { if (m_aFmt) delete [] m_aFmt; }
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void Init(UINT cfmt, FORMATETC * afmt)
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{
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m_cFmt = cfmt;
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m_aFmt = afmt;
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}
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// IEnumFORMATETC methods
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STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFethed);
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STDMETHODIMP Skip(ULONG celt);
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STDMETHODIMP Reset();
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STDMETHODIMP Clone(IEnumFORMATETC ** ppenum);
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private:
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UINT m_iFmt;
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UINT m_cFmt;
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FORMATETC * m_aFmt;
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}; // class CObjFormats
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//____________________________________________________________________________
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//
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// Class: CObjFormatsEx
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//
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// Purpose: Impements IEnumFORMATETC for objects.
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//____________________________________________________________________________
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class CObjFormatsEx : public IEnumFORMATETC,
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public CComObjectRoot
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{
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public:
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// ATL Maps
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DECLARE_NOT_AGGREGATABLE(CObjFormatsEx)
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BEGIN_COM_MAP(CObjFormatsEx)
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COM_INTERFACE_ENTRY(IEnumFORMATETC)
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END_COM_MAP()
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public:
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CObjFormatsEx() : m_iCur(0)
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{
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}
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~CObjFormatsEx()
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{
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}
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bool Init(IEnumFORMATETC* pEnum1, IEnumFORMATETC* pEnum2)
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{
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ASSERT(pEnum1 && pEnum2);
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if (!pEnum1 || !pEnum2)
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return false;
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m_rgspEnums[0] = pEnum1;
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m_rgspEnums[1] = pEnum2;
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return true;
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}
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// IEnumFORMATETC methods
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STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFethed);
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STDMETHODIMP Skip(ULONG celt);
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STDMETHODIMP Reset();
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STDMETHODIMP Clone(IEnumFORMATETC ** ppenum);
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private:
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UINT m_iCur;
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IEnumFORMATETCPtr m_rgspEnums[2];
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}; // class CObjFormatsEx
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#endif // _OBJFMTS_H_
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