ZXOutputLog.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:svg="using:Avalonia.Svg.Skia"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="ZXBasicStudio.Controls.ZXOutputLog">
  <UserControl.ContextMenu>
    <ContextMenu Placement="Pointer">
      <MenuItem Header="Clear output window" Name="mnuClearOutputWindow" />
      <MenuItem Header="Copy to clipboard" Name="mnuCopyToClipboard" />
    </ContextMenu>
  </UserControl.ContextMenu>
  <Grid RowDefinitions="auto,*">
    <Grid ColumnDefinitions="1*" DataContext=".ZXMemoryView">
      <StackPanel Grid.Row="0" Spacing="2" Orientation="Horizontal" Margin="2" HorizontalAlignment="Left">
        <Button Width="30" Foreground="Black" Classes="toolbar" Name="btnClearOutputWindow" ToolTip.Tip="Clear output window">
          <svg:Svg Path="/Svg/eraser-solid.svg"></svg:Svg>
        </Button>
        <Button Width="30" Foreground="Black" Classes="toolbar" Name="btnCopyToClipboard" ToolTip.Tip="Copy output log to clipboard">
          <svg:Svg Path="/Svg/copy-solid.svg"></svg:Svg>
        </Button>
      </StackPanel>
    </Grid>
    <Grid Grid.Row="1">
      <ScrollViewer HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="#FF202020" Name="scrOutput"
                    VerticalScrollBarVisibility="Auto">
        <!--
        <TextBlock TextWrapping="Wrap" Foreground="White" Name="tbOutput" Padding="10" IsVisible="False"/>
        -->
        <TextBox TextWrapping="Wrap" AcceptsReturn="True" Foreground="White" Name="tbOutput" Padding="10" IsReadOnly="True"/>
      </ScrollViewer>
    </Grid>
  </Grid>
</UserControl>