How do I make an irregular shaped Aero window like this one?
Look in the lower right c
I recently used this solution and it worked for me:
http://devintelligence.com/2007/10/shaped-windows-in-wpf/
I had to create a separate assembly containing the WPF form because the rest of my project uses WinForms. From there it's quite straight forward: Use a background image with transparency and set the form to transparent.
Though you might need to change WindowStyle="None"
to something other or else
you'll have no close button etc.