I use a terminal with white text on black background (I just like it better), so I wrote the following line in my .vimrc file:

set background=dark

However, gvim has black on white text. How do I do either of the following:

• Set the background of gvim to black
• Check in .vimrc if I'm using gvim

I tried this: I started up gvim, and typed echo &term. The answer was "builtin_gui". So I wrote the following into .vimrc:

if &term == "builtin_gui"
    set background=light
else
    set background=dark
endif

Somehow, it didn't work.