MessageDialog.xaml

<Window x:Class="ClamHub.MessageDialog"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="ClamHub" SizeToContent="Height" Width="520"
        WindowStartupLocation="CenterOwner" WindowStyle="None" ResizeMode="NoResize"
        Background="{StaticResource BgBrush}"
        MouseLeftButtonDown="Window_MouseLeftButtonDown">
    <Border BorderBrush="{StaticResource WindowBorderBrush}" BorderThickness="1">
        <Grid Margin="24">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>

            <TextBlock Grid.Row="0" x:Name="TitleText" FontSize="20" FontWeight="SemiBold"/>
            <TextBlock Grid.Row="1" x:Name="MessageText" Margin="0,12,0,0"
                       TextWrapping="Wrap" Foreground="{StaticResource MutedTextBrush}"/>

            <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Right"
                        Margin="0,20,0,0">
                <Button x:Name="ConfirmButton" MinWidth="100" Height="30" Padding="14,0"
                        Margin="0,0,8,0" Click="Confirm_Click"/>
                <Button x:Name="CancelButton" MinWidth="90" Height="30" Padding="14,0"
                        Margin="0,0,8,0" Click="Cancel_Click"/>
                <Button x:Name="ExtraButton" MinWidth="90" Height="30" Padding="14,0"
                        Visibility="Collapsed" Click="Extra_Click"/>
            </StackPanel>
        </Grid>
    </Border>
</Window>