ApCoCoA-1:HowTo:Tips for developing (Ap)CoCoA with Eclipse
Code completion troubleshooting
Code completion does not work and my editor window has a gray background
In this case it could be that you are currently working within a
#ifdef SOME_SYMBOL block and the symbol
SOME_SYMBOL has not been declared within your Eclipse project. Symbols can be declared by clicking on Project -> Properties -> C/C++ General -> Paths and Symbols -> Symbols. Be sure to declare the symbol for the correct programming language (e.g. "GNU C++").