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git.saurik.com Git - wxWidgets.git/blob - include/wx/msw/ole/dataobj.h
1 ///////////////////////////////////////////////////////////////////////////////
3 // Purpose: declaration of the wxDataObject class
4 // Author: Vadim Zeitlin
8 // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // Licence: wxWindows license
10 ///////////////////////////////////////////////////////////////////////////////
15 // ----------------------------------------------------------------------------
16 // forward declarations
17 // ----------------------------------------------------------------------------
20 // ----------------------------------------------------------------------------
21 // wxDataObject is a "smart" and polymorphic piece of data.
23 // @@@ it's currently "read-only" from COM point of view, i.e. we don't support
24 // SetData. We don't support all advise functions neither (but it's easy to
25 // do if we really want them)
26 // ----------------------------------------------------------------------------
31 // all data formats (values are the same as in windows.h, do not change!)
55 // function to return symbolic name of clipboard format (debug messages)
56 static const char *GetFormatName(wxDataFormat format
);
63 // pure virtuals to override
64 // get the best suited format for our data
65 virtual wxDataFormat
GetPreferredFormat() const = 0;
66 // decide if we support this format (should be one of values of
67 // StdFormat enumerations or a user-defined format)
68 virtual bool IsSupportedFormat(wxDataFormat format
) const = 0;
69 // get the (total) size of data
70 virtual uint
GetDataSize() const = 0;
71 // copy raw data to provided pointer
72 virtual void GetDataHere(void *pBuf
) const = 0;
75 // retrieve IDataObject interface (for other OLE related classes)
76 IDataObject
*GetInterface() const { return m_pIDataObject
; }
79 IDataObject
*m_pIDataObject
; // pointer to the COM interface
82 // ----------------------------------------------------------------------------
83 // wxTextDataObject is a specialization of wxDataObject for text data
84 // ----------------------------------------------------------------------------
85 class wxTextDataObject
: public wxDataObject
90 wxTextDataObject(const wxString
& strText
) : m_strText(strText
) { }
91 void Init(const wxString
& strText
) { m_strText
= strText
; }
93 // implement base class pure virtuals
94 virtual wxDataFormat
GetPreferredFormat() const
95 { return wxDataObject::Text
; }
96 virtual bool IsSupportedFormat(wxDataFormat format
) const
97 { return format
== wxDataObject::Text
|| format
== wxDataObject::Locale
; }
98 virtual uint
GetDataSize() const
99 { return m_strText
.Len() + 1; } // +1 for trailing '\0'of course
100 virtual void GetDataHere(void *pBuf
) const
101 { memcpy(pBuf
, m_strText
.c_str(), GetDataSize()); }
107 // ----------------------------------------------------------------------------
108 // @@@ TODO: wx{Bitmap|Metafile|...}DataObject
109 // ----------------------------------------------------------------------------
111 #endif //_OLEDATAOBJ_H