在使用Visual Assist
(VC助手)的时候，会在C盘(系统盘)留下很多cache文件，都是以前保存的项目中的解析索引文件，久而久之会越来越大，侵占C盘空间。查了下解决的
办法如下： (根据tomato官方BBS的说法，实测有效)
By default Visual Assist X stores its
symbol database in the following directory tree:
Under Windows
2000 and Windows XP:
C:\Documents and Settings\<USERNAME>
\Local
Settings\Application Data\VisualAssist\
Under Windows Vista:
C:\Users\<USERNAME>
\AppData\Local\VisualAssist\
If
you are using Visual Assist X 1614 and above
then you can tell
Visual Assist X to use a different directory by setting the registry
key:
HKCU \ Software \ Whole Tomato \ UserDataDir =
"C:\new_path\"
You will need to create this String value since
Visual Assist X does not create it by default.
Visual
Assist X will store the symbol database, history, cache and temporary
files in this new directory tree. Simply delete the key to revert back
to the default locations for the symbol database.
Note you need
to close all instances of the IDE before setting this registry key.
也
就是在注册表中自己加一个项，即可。
