Other source of error?Flying, i investigate it again. I think the problem may caused by the initialization of farray. In the public part, i defined some public functions, and i initialize the farray with these public functions. Class Object { public: void retrieve() {...} void insert() {...} void update() {...} private: typedef void (Object::*Omf)(); Omf farray[3]; }; Object::Omf Object::farray[3]= { &Object::retrieve, &Object::insert, &Object::update }; &Object::retrieve and such are fixed addresses, so farray must be defined as static, correct? Is this a rule defining a static member? What are the rules for definition of static members? TIA