80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: msw/ole/dataobj.h
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// Purpose: declaration of the wxDataObject class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 10.05.98
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// RCS-ID: $Id: dataobj.h 37406 2006-02-09 03:45:14Z VZ $
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// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_MSW_OLE_DATAOBJ_H
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#define _WX_MSW_OLE_DATAOBJ_H
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// ----------------------------------------------------------------------------
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// forward declarations
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// ----------------------------------------------------------------------------
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struct IDataObject;
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// ----------------------------------------------------------------------------
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// wxDataObject is a "smart" and polymorphic piece of data.
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxDataObject : public wxDataObjectBase
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{
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public:
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// ctor & dtor
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wxDataObject();
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virtual ~wxDataObject();
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// retrieve IDataObject interface (for other OLE related classes)
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IDataObject *GetInterface() const { return m_pIDataObject; }
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// tell the object that it should be now owned by IDataObject - i.e. when
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// it is deleted, it should delete us as well
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void SetAutoDelete();
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// return true if we support this format in "Get" direction
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bool IsSupportedFormat(const wxDataFormat& format) const
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{ return wxDataObjectBase::IsSupported(format, Get); }
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// if this method returns false, this wxDataObject will be copied to
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// the clipboard with its size prepended to it, which is compatible with
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// older wx versions
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//
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// if returns true, then this wxDataObject will be copied to the clipboard
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// without any additional information and ::HeapSize() function will be used
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// to get the size of that data
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virtual bool NeedsVerbatimData(const wxDataFormat& WXUNUSED(format)) const
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{
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// return false from here only for compatibility with earlier wx versions
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return true;
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}
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// function to return symbolic name of clipboard format (for debug messages)
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#ifdef __WXDEBUG__
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static const wxChar *GetFormatName(wxDataFormat format);
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#define wxGetFormatName(format) wxDataObject::GetFormatName(format)
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#else // !Debug
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#define wxGetFormatName(format) _T("")
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#endif // Debug/!Debug
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// they need to be accessed from wxIDataObject, so made them public,
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// or wxIDataObject friend
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public:
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virtual const void* GetSizeFromBuffer( const void* buffer, size_t* size,
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const wxDataFormat& format );
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virtual void* SetSizeInBuffer( void* buffer, size_t size,
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const wxDataFormat& format );
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virtual size_t GetBufferOffset( const wxDataFormat& format );
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private:
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IDataObject *m_pIDataObject; // pointer to the COM interface
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DECLARE_NO_COPY_CLASS(wxDataObject)
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};
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#endif //_WX_MSW_OLE_DATAOBJ_H
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