C++: warning: '…' declared with greater visibility than the type of its field '…::'

Question

I\'m getting these two warnings (with GCC 4.2 on MacOSX):

/Users/az/Programmierung/openlierox/build/Xcode/../../src/main.cpp:154:0 /Users/az/Programmierung/openliero

Answer 1

It's because you forgot to declare the inheritance as public.

    struct MainLockDetector : public Action {
         bool wait(Uint32 time) { /* ... */ }
         int handle() { /* ... */ }
    };

This causes the "Action" members to be private. But, you've just overridden an Action private member as public (public default in a struct), which could break encapsulation, hence the warning.