"Create Folder" and "Create Document" worked well. But nothing happened when click "Create Launcher". It's annoying to create launchers in Terminal. so what can I do?
Out of curiosity on my part, let's something a little different. I am going to assume that you do not have 'Ubuntu-Tweak' installed. If you do, skip this step. From a terminal (CTRL+ALT+T) issue the following command:
sudo apt-get install ubuntu-tweak
Once 'Ubuntu-Teak' is installed (or if it is already installed), start it. Under the Desktop section, select Desktop Icon Settings. Does your setup look like what it pictured below?
I was thinking that if the 'Show desktop icons' option was not enabled that you would not be able to create a new launcher on the desktop. Please let me know what you find.