<p>The properties of the <b>P4Callback</b> class are listed below. For a complete list of <b>P4Callback</b> class members, see the <ahref="P4API.P4CallbackMembers.html">P4Callback Members</a> topic.</p>
<trVALIGN="top"><tdwidth="50%"><imgsrc="protproperty.gif"></img><ahref="P4API.P4Callback.ContentEncoding.html">ContentEncoding</a></td><tdwidth="50%"> Gets the content encoding. </td></tr>
<trVALIGN="top"><tdwidth="50%"><imgsrc="protproperty.gif"></img><ahref="P4API.P4Callback.SpecDef.html">SpecDef</a></td><tdwidth="50%"> Gets the specdef for a form if it exists. </td></tr></table>