To add paths containing code to parse, follow these steps :
1. Right click
on the project
2. Select Properties
3. Go to C/C++ General
4. Go to
Path and Symbols
5. If the paths are missing, add paths.
To re-parse the code follow these steps :
1. Right click on the
project
2. Select Index
3. Rebuild
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原文：http://www.cnblogs.com/bigben0123/p/3620334.html