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    <p>What I did:</p> <pre><code>struct vpath_traits; typedef boost::filesystem::basic_path&lt;std::string, vpath_traits&gt; vpath; // utf8 struct vpath_traits { typedef std::string internal_string_type; typedef std::wstring external_string_type; static external_string_type to_external( const vpath &amp;, const internal_string_type &amp;src); static internal_string_type to_internal(const external_string_type &amp;src); }; namespace boost { namespace filesystem { template&lt;&gt; struct is_basic_path&lt;vpath&gt; { BOOST_STATIC_CONSTANT( bool, value = true ); }; } } // convenient functions for converting vpath to and from // whatever API you may be using. std::string vpathToWin32Byte(const vpath &amp;src); vpath vpathFromWin32Byte(const std::string &amp;str); vpath vpathFromWin32Byte(const char *str); std::wstring vpathToWin32Wide(const vpath &amp;src); vpath vpathFromWin32Wide(const std::wstring &amp;str); vpath vpathFromWin32Wide(const wchar_t *str); QDir vpathToQDir(const vpath &amp;src); vpath vpathFromQDir(const QDir &amp;qdir); </code></pre> <p>Note:</p> <p>You must somehow implement the methods <code>vpath_traits::to_external</code> and <code>vpath_traits::to_internal</code>. There are probably some utf8-converter in boost. However I implemented the utf8 to ucs-16 and back myself, but it is neither pretty nor complete, so you are better off using some standard implementation.</p> <p>It works in our code. E g:</p> <pre><code>namespace fs = boost::filesystem; ... vpath dstFile = dstDir / filePath; bool success = true; try { fs::remove(dstFile); } catch (fs::basic_filesystem_error&lt;vpath&gt; &amp; /* e */) { success = false;} if (success) { try { fs::copy_file(srcFile, dstFile); } catch (fs::basic_filesystem_error&lt;vpath&gt; &amp; /* e */) { success = false;} } ... </code></pre>
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    1. POCross platform unicode path handling
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    1. COI'll try this on Monday, thx.
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      1. USMatt Joiner
    2. COhm, doesn't really provide any advantage, and breaks the ability to use the `path` and `wpath` convenience functions
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