span class="name"><a href="dart-ui/PointerDataPacketCallback.html">PointerDataPacketCallback</a></span><span class="signature">(<wbr><span class="parameter" id="PointerDataPacketCallback-param-packet"><span class="type-annotation"><a href="dart-ui/PointerDataPacket-class.html">PointerDataPacket</a></span> <span class="parameter-name">packet</span></span>)
            <span class="returntype parameter">&#8594; void</span>
          </span>
                  </dt>
        <dd>
          Signature for <a href=