How to lock the computer desktop

We always like to set up a good desktop background, depending on personal preferences, sometimes will be

People to change. How to lock these desktop backgrounds so that no one else can change them at random. Let me give you a brief explanation as

How to lock the desktop background.
First Open "Start → run", enter "regedit" Open Registry Editor, find branch

"Hkey_current_usersoftwaremicrosoftwindowscurrentversion Policies",

Create a new Activedeskop item, and then create a new one in the right window named Nochangingwallpaper.

DWORD value and set its value to 1 so that you can completely lock your desktop background. It's a simple way to unlock it.

Single: Modify the new DWORD value to 0.