working with fontstretch in wpf - wpf

Question

I want to learn how to utilize fontstretch in my wpf applications.
I've created this simple usercontrol, a border with rounded corners which has a textblock. I want to stretch the text of the textblock to fill my border. I want to avoid the use of the viewbox control to do this.
this is my usercontrol xaml
<UserControl x:Class="DisplayObject"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400" Background="Transparent">
<UserControl.Resources>
<LinearGradientBrush x:Key="BackGroundBrush" StartPoint="0,0" EndPoint="1,1">
<GradientStop Color="AntiqueWhite" Offset="0"/>
<GradientStop Color="White" Offset="0.45" />
<GradientStop Color="Silver" Offset="1" />
</LinearGradientBrush>
</UserControl.Resources>
<Border x:Name="LayoutRoot" CornerRadius="12" Background="{StaticResource BackGroundBrush}" BorderBrush="Black" BorderThickness="2">
<TextBlock TextAlignment="Center" Text="{Binding Path=DisplayText}"
Background="Transparent" HorizontalAlignment="Center" VerticalAlignment="Center"
TextWrapping="Wrap" FontSize="12" FontFamily="Arial" FontStretch="UltraExpanded"/>
</Border>
</UserControl>
From what I gather from reading online the Arial font is an opentype so it supports stretching. I tried using horizontal/vertical alignment values of "Stretch" but this did not help. Not sure what I have done wrong but I figured someone on this site may be able to explain why its not stretching for me, and how to fix it.
Thanks for reading my post.

Answer 1

The Arial font does not seem to support the FontStretch value of UltraExpanded. Try the value of UltraCondensed instead to see it work:
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Text="{Binding DisplayText}" FontSize="30"
FontFamily="Arial" HorizontalAlignment="Center" VerticalAlignment="Center" />
<TextBlock Grid.Row="1" Text="{Binding DisplayText}" FontSize="30"
FontFamily="Arial" HorizontalAlignment="Center" VerticalAlignment="Center"
FontStretch="UltraCondensed" />
</Grid>
Look at the Why FontStretch does not work in WPF? post to find out an alternative to using this little used property.