title: How to add buttons to DevExpress RibbonControl?
body: <p>I am using DevExpress WPF MVVM Framework. I want to add buttons above the "Home" tab as shown by this image. How is it possible? <img src="https://i.stack.imgur.com/imZjw.png" alt="enter image description here"></p>
  
  <pre><code>&lt;dxb:BarManager&gt; 
      &lt;dxb:BarManager.Items&gt;
          &lt;dxb:BarButtonItem x:Name="barButtonItem1" Content="About" Glyph="pack://application:,,,/DevExpress.Images.v13.1;component/Images/Support/Info_16x16.png" LargeGlyph="pack://application:,,,/DevExpress.Images.v13.1;component/Images/Support/Info_32x32.png" Command="{Binding ShowAboutCommand}"/&gt;
          &lt;dxb:BarButtonItem x:Name="barButtonItem2" Content="New" /&gt;
          &lt;dxb:BarButtonItem x:Name="SaveCommandBarButtonItem" Content="Save" /&gt;
      &lt;/dxb:BarManager.Items&gt;
  ...               
  </code></pre>