ancel any asynchronous
                  operations that are waiting on the timer.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <a class="link" href="basic_waitable_timer/cancel_one.html" title="basic_waitable_timer::cancel_one"><span class="bold"><strong>cancel_one</strong></span></a>
                </p>
              </td>
<td>
                <p>
                  Cancels one asynchronous operation that is waiting on the timer.
                </p>
     