ss="parameter" id="FrameCallback-param-duration"><span class="type-annotation"><a href="dart-core/Duration-class.html">Duration</a></span> <span class="parameter-name">duration</span></span>)
            <span class="returntype parameter">&#8594; void</span>
          </span>
                  </dt>
        <dd>
          Signature for <a href="dart-ui/Window/onBeginFrame.html">Window.onBeginFrame</a>.
                  
</dd>
        <dt id="ImageDecoderCallback" class="callable">
          <span class="na