Paste in Vim can not solve right mouse problem

Recently maintain a server, log in with putty later when using vim, the right mouse button can not
stick but into the visual mode. Internet to find some solution found: square
method a: In the normal mode, type ": set mouse- = a" (without the quotes) Square
Method Two: Edit ~ / .vimrc file, add the following code: if has ( ' Mouse ')
sET a = mouse- endif methods require a set time each open vim. Methods
After two changed the configuration file, the problem is solved.