I am working on this fully transparent toolbar style window that I docked on the bottom right corner of the screen. What I am unable to do is to get rid of the small square at the bottom right of the window (primarily because I don’t know what it is).

Notice the small block at the bottom right. Any pointers regarding how to hide that thing?
My XAML (which is pretty much empty) looks like this:
<ui:BaseView x:Class="Infosys.DirectorySearch.UI.SearchView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:ui="clr-namespace:Infosys.DirectorySearch.UI"
WindowStyle="ToolWindow"
ResizeMode="NoResize"
ShowInTaskbar="False"
WindowStartupLocation="Manual"
Width="400"
Height="Auto"
Loaded="SearchView_Loaded">
<Grid>
</Grid>
</ui:BaseView>
The glassification code is taken from here: http://dotnet.dzone.com/articles/aero-glass-wpf-window
Unfortunately, the solutions didn’t work. But the square seems to have disappeared as I added some controls to the page. Marking this solution as answered.