<UserControl x:Class="Testing.InputActionGlyph"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Name="InputActionGlyphRoot">
    <TextBlock Text="{Binding Action, ElementName=InputActionGlyphRoot}" FontSize="30" Foreground="Red"/>
</UserControl>