lightline.vim not working with single screen

[pihao]

My environment:

• Windows 8.1 64bit.
• gvim 7.4

I install lightline with Pathogen like this:

`-bundle
  |-lightline.vim
  |-nerdtree
  `-ctrlp.vim

So, lightline is not working when gvim has a single screen.
But, it's working when I split screen.
Can you help me?

• not_working_with_single_screen
  
• working_with_split_screen
  

[itchyny]

Try

set laststatus=2

[pihao]

Ye! it's working!
Thx :)