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++").