espace </span>boost { <span class="keyword">namespace </span>gil {
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 <span class="keyword">namespace </span>detail {
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 <span class="keyword">struct </span>png_write_is_supported {
<a name="l00046"></a>00046     <span class="keyword">template</span>&lt;<span class="keyword">typename</span> View&gt; <span class="keyword">struct </span>apply
<a name="l00047"></a>00047         : <span class="keyword">public