er-supplied data that is passed to the callback.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This callback allows client applications to directly render the gray spans of the anti-aliased bitmap to any kind of surfaces.</p>
<p>This can be used to write anti-aliased outlines directly to a given background bitmap, and even perform translucency.</p>
<p>Note that the &lsquo;count&rsquo; field cannot 