by-side
on Android). <a href="../dart-ui/Window/onMetricsChanged.html">[...]</a>
                  <div class="features">read / write</div>
</dd>
        <dt id="onPlatformBrightnessChanged" class="property">
          <span class="name"><a href="../dart-ui/Window/onPlatformBrightnessChanged.html">onPlatformBrightnessChanged</a></span>
          <span class="signature">&#8596; <a href="../dart-ui/VoidCallback.html">VoidCallback</a></span>         
        </dt>
        <dd>
          A callback that is invo