DWM is a .NET Wrapper over the Desktop Window Manager library introduced with Windows Vista.
I wrote it in 2008, when Vista came out and I was doing a lot of Win32 programming (with WinForms). The library exposes some of the new UI capabilities introduced with Vista, like BlurBehind and thumbnails for windows.
At that time, there was no equivalent .NET library to leverage the native API as far as I'm aware of. No idea what's the current state of things.
Now on GitHub as part of #throwbackthursday, as I plan to publish my old hobby projects whenever I find the source code.
Stick the files under src into a C# project and try to build them, might
still work.
Good old .chm file is here: https://github.com/vladris/DWM/blob/master/doc/DWM%20Managed%20API%20Help.chm