der&lt; std::wstring</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;                              , FormatTag</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;                              , ConversionPolicy</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;                              &gt;::type( device</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;                   