ping/MainWindow.xaml

<Window x:Class="PingHandler.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Network Latency Monitor" 
        Width="85" 
        Height="45" 
        Topmost="True"
        WindowStyle="None" 
        AllowsTransparency="True" 
        Background="Transparent"
        ResizeMode="NoResize"
        MouseDown="Window_MouseDown"
        LocationChanged="Window_LocationChanged"
        MouseEnter="Window_MouseEnter"
        MouseLeave="Window_MouseLeave">
    <Window.Resources>
        <Style x:Key="ColoredProgressBar" TargetType="ProgressBar">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ProgressBar">
                        <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1" CornerRadius="5">
                            <Grid x:Name="PART_Track" Background="Transparent">
                                <Rectangle x:Name="PART_Indicator" HorizontalAlignment="Left" Fill="{TemplateBinding Foreground}" />
                                </Grid>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="BorderBrush" Value="Black"/>
            <Setter Property="Foreground" Value="Green"/>
            <Setter Property="Height" Value="20"/>
        </Style>
        <Style x:Key="VerticalProgressBar" TargetType="ProgressBar">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ProgressBar">
                        <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1" CornerRadius="5">
                            <Grid x:Name="PART_Track" Background="Transparent" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
                                <Rectangle x:Name="PART_Indicator" VerticalAlignment="Bottom" Fill="{TemplateBinding Foreground}" Width="20" HorizontalAlignment="Stretch" />
                            </Grid>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="BorderBrush" Value="Black"/>
            <Setter Property="Foreground" Value="Green"/>
            <Setter Property="Width" Value="20"/>
        </Style>
    </Window.Resources>
    <Grid>
        <Border  x:Name="MainBorder" Background="#80000000" CornerRadius="5">
            <Grid>
                <Border BorderBrush="Black" BorderThickness="1" CornerRadius="5" Margin="5">
                <TextBlock x:Name="LatencyText" 
                           VerticalAlignment="Center" 
                           HorizontalAlignment="Center" 
                               FontWeight="Bold"
                               Padding="5"/>
                </Border>
                <ProgressBar x:Name="LatencyProgressBar" 
                             VerticalAlignment="Bottom" 
                             Margin="5"
                             Minimum="0" 
                             Maximum="200"
                             Height="4"
                             Style="{StaticResource ColoredProgressBar}"/>
                <Border x:Name="DragArea"
                        Background="Transparent"
                        HorizontalAlignment="Stretch"
                        VerticalAlignment="Top"
                        Height="20"
                        MouseDown="Window_MouseDown"/>
            </Grid>
        </Border>
    </Grid>
</Window>