how to add an entry element on right mouse click

I want to know if is is possible to add an entry in the context menu (right click menu) of the OS file explorer (e.g. Windows Explorer) for my program .

The objective is that when I right click on a file or a directory, I'd like my element in that menu and do something when the user clicks on it.

Yes it is possible. No, it has nothing to do with Qt... It is done with Windows registry entries usually
Lots of options to choose from