DirectXPage.xaml

<Page
    x:Class="$safeprojectname$.DirectXPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:$safeprojectname$"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

  <SwapChainPanel x:Name="swapChainPanel">
    <TextBlock Text="Hello from XAML!"
               HorizontalAlignment="Right"
               VerticalAlignment="Top"
               FontSize="30" />
  </SwapChainPanel>

  <Page.BottomAppBar>
    <AppBar x:Name="bottomAppBar" Padding="10,0,10,0">
      <StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
        <AppBarButton AutomationProperties.Name="Sample Button"
                      AutomationProperties.AutomationId="SampleAppBarButton"
                      Click="AppBarButton_Click"/>
      </StackPanel>
    </AppBar>
  </Page.BottomAppBar>
</Page>