Opposite of "always on top"

Question

I want to set my application to be on desktop level, like Windows Gadgets. Is this possible to achieve?

Thing is, i have borderless application I want to run on desktop.

I tried to find the option, but I found only "always on top" which is opposite of what I want to achieve.

Answer 1

The good old SetWindowPos supports a HWND_BOTTOM to place your application as the last one in the order. To use it in C# take a look at PInvoke.Net.

Answer 2

Write the app so that it runs as a service in the background, then implement an actual Windows Gadget as a front-end?