see:http://stackoverflow.com/questions/2184133/prevent-class-inheritance-in-c
倾向于使用private constructor and non-virtual destructor.
#include <iostream> using namespace std; class CBase { public: static CBase* CreateInstance() { CBase* b1 = new CBase(); return b1; } private: CBase() { } CBase(const CBase &c) { } CBase& operator=(const CBase &c) { } }; class CC : public CBase { }; int main() { CC c; return 0; }
编译:
/home/a/j/nomad2:g++ Y.CPP Y.CPP: In constructor 'CC::CC()': Y.CPP:13: error: 'CBase::CBase()' is private Y.CPP:19: error: within this context Y.CPP: In function 'int main()': Y.CPP:24: note: synthesized method 'CC::CC()' first required here