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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/msw/ole/dataform.h | |
3 | // Purpose: declaration of the wxDataFormat class | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 19.10.99 (extracted from msw/ole/dataobj.h) | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifndef _WX_MSW_OLE_DATAFORM_H | |
13 | #define _WX_MSW_OLE_DATAFORM_H | |
14 | ||
15 | // ---------------------------------------------------------------------------- | |
16 | // wxDataFormat identifies the single format of data | |
17 | // ---------------------------------------------------------------------------- | |
18 | ||
19 | class WXDLLIMPEXP_CORE wxDataFormat | |
20 | { | |
21 | public: | |
22 | // the clipboard formats under Win32 are WORD's | |
23 | typedef unsigned short NativeFormat; | |
24 | ||
25 | wxDataFormat(NativeFormat format = wxDF_INVALID) { m_format = format; } | |
26 | ||
27 | // we need constructors from all string types as implicit conversions to | |
28 | // wxString don't apply when we already rely on implicit conversion of a, | |
29 | // for example, "char *" string to wxDataFormat, and existing code does it | |
30 | wxDataFormat(const wxString& format) { SetId(format); } | |
31 | wxDataFormat(const char *format) { SetId(format); } | |
32 | wxDataFormat(const wchar_t *format) { SetId(format); } | |
33 | wxDataFormat(const wxCStrData& format) { SetId(format); } | |
34 | ||
35 | wxDataFormat& operator=(NativeFormat format) | |
36 | { m_format = format; return *this; } | |
37 | wxDataFormat& operator=(const wxDataFormat& format) | |
38 | { m_format = format.m_format; return *this; } | |
39 | ||
40 | // default copy ctor/assignment operators ok | |
41 | ||
42 | // comparison (must have both versions) | |
43 | bool operator==(wxDataFormatId format) const | |
44 | { return m_format == (NativeFormat)format; } | |
45 | bool operator!=(wxDataFormatId format) const | |
46 | { return m_format != (NativeFormat)format; } | |
47 | bool operator==(const wxDataFormat& format) const | |
48 | { return m_format == format.m_format; } | |
49 | bool operator!=(const wxDataFormat& format) const | |
50 | { return m_format != format.m_format; } | |
51 | ||
52 | // explicit and implicit conversions to NativeFormat which is one of | |
53 | // standard data types (implicit conversion is useful for preserving the | |
54 | // compatibility with old code) | |
55 | NativeFormat GetFormatId() const { return m_format; } | |
56 | operator NativeFormat() const { return m_format; } | |
57 | ||
58 | // this works with standard as well as custom ids | |
59 | void SetType(NativeFormat format) { m_format = format; } | |
60 | NativeFormat GetType() const { return m_format; } | |
61 | ||
62 | // string ids are used for custom types - this SetId() must be used for | |
63 | // application-specific formats | |
64 | wxString GetId() const; | |
65 | void SetId(const wxString& format); | |
66 | ||
67 | // returns true if the format is one of those defined in wxDataFormatId | |
68 | bool IsStandard() const { return m_format > 0 && m_format < wxDF_PRIVATE; } | |
69 | ||
70 | private: | |
71 | NativeFormat m_format; | |
72 | }; | |
73 | ||
74 | #endif // _WX_MSW_OLE_DATAFORM_H | |
75 |