dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>fun</em>&nbsp;</td><td>passed an image and v when an image is unloaded </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>v</em>&nbsp;</td><td>the value to pass to fun when an image is unloaded</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>PIN_CALLBACK A handle to a callback that can be used to further modify this callback's properties</dd></dl>
<dl compact><dt><b>Note: