allback.html">VoidCallback</a></li>
    
    </ol>
  </div>

  <div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
      <div><h1><span class="kind-class">Window</span> class </h1></div>

    <section class="desc markdown">
      <p>The most basic interface to the host operating system's user interface.</p>
<p>It exposes the size of the display, the core scheduler API, the input event
callback, the graphics drawing API, and other such core services.</p>
<p>There is a single Wind