How do I make an irregular shaped Aero window like this one?Look in the lower right corner!
This program also does it.
This also does it! >_< Even more...
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.
来源：https://stackoverflow.com/questions/6438076/custom-shaped-aero-windows-in-c-like-these