PyCharm, how to change the font of the Quick Documentation window

Question

I'm using PyCharm 2016.1 on windows 7 with its locale set to PRC-Chinese.

In the Quick Documentation window, the first-2-lines look odd (some Chinese-SimSun font?). However, the last line is fine.

How can I change the font of those odd lines?
(hacking into some CSS in some jar?)

I've already changed the editor font to Consolas (its default value was also the odd SimSun)

Answer 1

In idea, I add code below into idea64.exe.vmoptions, this changes SimSun to Courier New when display code in documentation, much better at least, hope it works for you.

-Duser.language=en
-Duser.region=US
-Dfile.encoding=UTF-8