Вот основы того, что я нашел. Мы работаем с нами, используя только шрифт Windows, который имеет эти символы, но современный пользовательский интерфейс для wpf делает здесь здесь пути. Полный код можно найти по ссылке ниже этого было достаточно кода, чтобы показать его работу.
https://mui.codeplex.com/SourceControl/latest#1.0/FirstFloor.ModernUI/FirstFloor.ModernUI.WPF4/Themes/ModernDialog.xaml
<Style x:Key="SystemButtonBase" TargetType="ButtonBase">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ButtonBase}">
<Border Name="Chrome"
Background="{TemplateBinding Background}"
BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}"
SnapsToDevicePixels="true">
<ContentPresenter Margin="{TemplateBinding Padding}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="SystemButton" TargetType="ButtonBase" BasedOn="{StaticResource SystemButtonBase}">
<Setter Property="Foreground" Value="{DynamicResource LinkButtonText}"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="{DynamicResource LinkButtonTextHover}"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Foreground" Value="{DynamicResource LinkButtonTextPressed}" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource LinkButtonTextDisabled}" />
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,8,6,0" WindowChrome.IsHitTestVisibleInChrome="True">
<Button Command="{Binding Source={x:Static SystemCommands.MinimizeWindowCommand}}" Style="{StaticResource SystemButton}">
<Button.Content>
<Grid Width="13" Height="12" RenderTransform="1,0,0,1,0,1">
<Path Data="M0,6 L8,6 Z" Width="8" Height="7" VerticalAlignment="Center" HorizontalAlignment="Center"
Stroke="{Binding Foreground, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Button}}" StrokeThickness="2" />
</Grid>
</Button.Content>
</Button>
<Grid Margin="1,0,1,0">
<Button x:Name="Restore" Command="{Binding Source={x:Static SystemCommands.RestoreWindowCommand}}" Visibility="Collapsed" Style="{StaticResource SystemButton}" >
<Button.Content>
<Grid Width="13" Height="12" UseLayoutRounding="True" RenderTransform="1,0,0,1,.5,.5">
<Path Data="M2,0 L8,0 L8,6 M0,3 L6,3 M0,2 L6,2 L6,8 L0,8 Z" Width="8" Height="8" VerticalAlignment="Center" HorizontalAlignment="Center"
Stroke="{Binding Foreground, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Button}}" StrokeThickness="1" />
</Grid>
</Button.Content>
</Button>
<Button x:Name="Maximize" Command="{Binding Source={x:Static SystemCommands.MaximizeWindowCommand}}" Style="{StaticResource SystemButton}" >
<Button.Content>
<Grid Width="13" Height="12">
<Path Data="M0,1 L9,1 L9,8 L0,8 Z" Width="9" Height="8" VerticalAlignment="Center" HorizontalAlignment="Center"
Stroke="{Binding Foreground, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Button}}" StrokeThickness="2" />
</Grid>
</Button.Content>
</Button>
</Grid>
<Button Command="{Binding Source={x:Static SystemCommands.CloseWindowCommand}}" Style="{StaticResource SystemButton}" >
<Button.Content>
<Grid Width="13" Height="12" RenderTransform="1,0,0,1,0,1">
<Path Data="M0,0 L8,7 M8,0 L0,7 Z" Width="8" Height="7" VerticalAlignment="Center" HorizontalAlignment="Center"
Stroke="{Binding Foreground, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Button}}" StrokeThickness="1.5" />
</Grid>
</Button.Content>
</Button>
</StackPanel>

Это идеально, именно то, что я искал. Кроме того, вы помните, какой шрифт вы используете? – user1632018
marlett - это тип шрифта http://www.reactos.org/wiki/Marlett_Characters – mhoward