We will use the last post for setting a wallpaper ans make it work in dolphin / konquerer file managers Action menu ;-)
- Make a new folder called ServiceMenus - normaly it does not exist by default
- create a text file with .desktop extension
- copy the following text into it using the text editor of your choosing - I like nano or kate.
[Desktop Action chwall]
- change the user with the account name of the user.
- right click on any image in the above file managers and you should see "Change wallpaper" option in the Action menu.