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95 lines
2.4 KiB
95 lines
2.4 KiB
/*
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* _DTE.H
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*
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* Purpose:
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* Interface declaration for IDataTransferEngine
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* there is typically one data transfer engine per
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* CTxtEdit instance
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*
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* Author:
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* alexgo 3/25/95
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*
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* NB! THIS FILE IS NOW OBSOLETE
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*/
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#ifndef __DTE_H__
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#define __DTE_H__
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#include "_m_undo.h"
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class CTxtRange;
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class CTxtEdit;
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/*
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* DataObjectInfo
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*
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* Purpose:
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* enumeration of bit flags used to indicate what operations
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* are possible from a given data object.
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*/
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typedef enum tagDataObjectInfo
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{
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DOI_NONE = 0,
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DOI_CANUSETOM = 1, // TOM<-->TOM optimized data transfers
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DOI_CANPASTEPLAIN = 2, // plain text pasting available
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DOI_CANPASTERICH = 4, // rich text pasting available
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DOI_CANPASTEOLE = 8, // object may be pasted as an OLE embedding
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// (note that this flag may be combined with
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// others).
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} DataObjectInfo;
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/*
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* IDataTransferEngine
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*
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* Purpose:
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* provides clipboard, drag drop, and data object data transfer
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* capabilities. Each implementation will provide a different
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* level of functionality (e.g. OLE vs no-OLE)
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*/
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class IDataTransferEngine
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{
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public:
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// memory mgmt
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virtual void Destroy() = 0;
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// clipboard operations
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virtual HRESULT CopyRangeToClipboard( CTxtRange *prg ) = 0;
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virtual HRESULT CutRangeToClipboard( CTxtRange *prg,
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IUndoBuilder *publdr ) = 0;
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virtual HRESULT PasteClipboardToRange( CTxtRange *prg,
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IUndoBuilder *publdr ) = 0;
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virtual BOOL CanPaste( CTxtRange *prg, CLIPFORMAT cf) = 0;
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// data object operations
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virtual HRESULT RangeToDataObject( CTxtRange *prg, LONG lStreamFormat,
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IDataObject **ppdo) = 0;
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virtual HRESULT PasteDataObjectToRange( IDataObject *pdo,
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CTxtRange *prg, IUndoBuilder *publdr) = 0;
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virtual HRESULT GetDataObjectInfo( IDataObject *pdo, DWORD *pDOIFlags ) = 0;
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// drag drop operations
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virtual HRESULT GetDropTarget( IDropTarget **ppDropTarget ) = 0;
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virtual HRESULT StartDrag( CTxtRange *prg, IUndoBuilder *publdr) = 0;
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// file i/o
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virtual LONG LoadFromEs( CTxtRange *prg, LONG lStreamFormat,
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EDITSTREAM *pes, IUndoBuilder *publdr) = 0;
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virtual LONG SaveToEs( CTxtRange *prg, LONG lStreamFormat,
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EDITSTREAM *pes ) = 0;
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// converstion routines
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virtual HGLOBAL AnsiPlainTextFromRange( CTxtRange *prg ) = 0;
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virtual HGLOBAL UnicodePlainTextFromRange( CTxtRange *prg ) = 0;
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};
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#endif // !__DTE_H__
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