60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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#pragma once
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class CBaseContent : public ISideShowContent
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{
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private:
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LONG m_nRef;
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protected:
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//
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// These methods should be overridden in the subclass to
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// provide (and later free) the content that should be
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// sent to the platform.
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//
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virtual void LoadContent(DWORD* pdwSize, BYTE** ppbData, ISideShowCapabilities* pICapabilities) = 0;
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virtual void FreeContent(BYTE** ppbData) = 0;
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//
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// Use this method to convert from Unicode to UTF-8 strings
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//
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LPSTR AllocTaskUtf8String(LPCWSTR lpszString);
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CONTENT_ID m_contentID;
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public:
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CBaseContent();
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virtual ~CBaseContent();
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//
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// IUnknown methods
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//
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STDMETHOD(QueryInterface)(
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REFIID riid,
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LPVOID* ppvObject);
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STDMETHOD_(ULONG, AddRef)();
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STDMETHOD_(ULONG, Release)();
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//
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// ISideShowContent methods
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//
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STDMETHOD(GetContent)(
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ISideShowCapabilities *pICapabilities,
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DWORD *pdwSize,
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BYTE **ppbData);
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STDMETHOD(get_ContentId)(
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PCONTENT_ID pcontentId);
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STDMETHOD(get_DifferentiateContent)(
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BOOL *pfDifferentiateContent);
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};
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