prs/prs.desktop/PreviewWindow.xaml

<wpf:ThemableWindow x:Class="InABox.Reports.PreviewWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
		xmlns:wpf="clr-namespace:InABox.Wpf;assembly=InABox.Wpf"
        mc:Ignorable="d"
        Title="PreviewWindow" Height="450" Width="800">
    <Grid />
</wpf:ThemableWindow>