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Use wxGetTranslation() instead of _() in the public headers.
[wxWidgets.git] / include / wx / meta / movable.h
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/meta/movable.h
3 // Purpose: Test if a type is movable using memmove() etc.
4 // Author: Vaclav Slavik
5 // Created: 2008-01-21
6 // Copyright: (c) 2008 Vaclav Slavik
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 #ifndef _WX_META_MOVABLE_H_
11 #define _WX_META_MOVABLE_H_
12
13 #include "wx/meta/pod.h"
14 #include "wx/string.h" // for wxIsMovable<wxString> specialization
15
16 // Helper to decide if an object of type T is "movable", i.e. if it can be
17 // copied to another memory location using memmove() or realloc() C functions.
18 // C++ only gurantees that POD types (including primitive types) are
19 // movable.
20 template<typename T>
21 struct wxIsMovable
22 {
23 wxDEFINE_TEMPLATE_BOOL_VALUE(wxIsPod<T>::value);
24 };
25
26 // Macro to add wxIsMovable<T> specialization for given type that marks it
27 // as movable:
28 #define WX_DECLARE_TYPE_MOVABLE(type) \
29 template<> struct wxIsMovable<type> \
30 { \
31 wxDEFINE_TEMPLATE_BOOL_VALUE(true); \
32 };
33
34 // Our implementation of wxString is written in such way that it's safe to move
35 // it around (unless position cache is used which unfortunately breaks this).
36 // OTOH, we don't know anything about std::string.
37 // (NB: we don't put this into string.h and choose to include wx/string.h from
38 // here instead so that rarely-used wxIsMovable<T> code isn't included by
39 // everything)
40 #if !wxUSE_STD_STRING && !wxUSE_STRING_POS_CACHE
41 WX_DECLARE_TYPE_MOVABLE(wxString)
42 #endif
43
44 #endif // _WX_META_MOVABLE_H_