throw 544 modules/highgui/src/agile_wrl.h bool operator==(nullptr_t, const Agile<U>& a) throw() throw 550 modules/highgui/src/agile_wrl.h bool operator!=(const Agile<U>& a, nullptr_t) throw() throw 556 modules/highgui/src/agile_wrl.h bool operator!=(nullptr_t, const Agile<U>& a) throw() throw 562 modules/highgui/src/agile_wrl.h bool operator!=(const Agile<U>& a, const Agile<U>& b) throw()