How can i create an animated desktop background from a unity scene?

I created an animation that i really like on unity, how can i use it as a dynamic desktop wallpaper?

There are two ways of doing it, Using windows dream scenes you can put videos on desktop background.

Also you can write a program in windows that reads the DC content of the unity window and then finds and gets the DC of the desktop and copy bitblt the content of the unity’s DC to the desktop one.

The advantage of the second approach is that you can have an interactive app that responds to events as well.