<Window x:Class="SimpleExample.Window1"

 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

 xmlns:d="http://schemas.jastdev.Controls.DockingControl/winfx/2007/xaml/presentation"

        Title="SimpleExample" 

   <d:DockingControl x:Name="TheSource">

     <d:ToolFrame Name="FrmLeft" Dock="Left" Width="150">

        <d:ToolFrameItem Source="/Page1.xaml" Title="Left A" Icon="Images/1.ico" />

        <d:ToolFrameItem Source="/Page2.xaml" Title="Left B" Icon="Images/2.ico" />

     </d:ToolFrame>

     <d:ToolFrame Name="FrmLeftBottom" Dock="Bottom" RelativeTo="FrmLeft" Height="160">

        <d:ToolFrameItem Source="/Page3.xaml" Title="Left bottom" Icon="Images/3.ico"/>

     </d:ToolFrame>

     <d:ToolFrame Name="FrmRight" Dock="Right" Location="Collapsed">

        <d:ToolFrameItem Source="/Page1.xaml" Title="Right A" Icon="/Images/4.ico" />

        <d:ToolFrameItem Source="/Page2.xaml" Title="Right B" Icon="/Images/5.ico" />

     </d:ToolFrame>

     <d:ToolFrame Name="FrmMain" HasHeader="False"  TabStripPlacement="Top" 

                  CanClose="False" TabVisibility="Visible">

        <d:ToolFrameItem Source="/CenterPage.xaml"  Title="Intro" />

     </d:ToolFrame>

   </d:DockingControl>

</Window>