Descriptor.cpp Descriptor.h Graph.cpp Graph.h INode.cpp INode.h IObject.cpp IObject.h loadGraph.cpp Session.cpp Session.h extra/ funcs/ [X]nodes/ mtl/ num/ [X]prim/ PrimitiveObiIO.cpp ## 多态的经典案例 - IObject 具有一个 eatFood 纯虚函数，而 CatObject 和 DogObject 继承自 IObject，他们实现了 eatFood 这个虚函数，实现了多态。 - 注意这里解构函数（~IObject）也需要是虚函数，否则以 IObject * 存储的指针在 delete 时只会释放 IObject 里的成员，而不会释放 CatObject 用不同派生类的解构函数。 struct IObject { IObject() = default; IObject(IObject const &) = default; IObject &operator=(IObject const &) = default; virtual ~IObject() = default; virtual

what you need is IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ rc = object->vtbl->Method(object, arg, ...); IFoo *foo; /* * Calling IFoo IObject::method(arg, ..

location. In other words, to call an object’s method what you need is IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ rc = object->vtbl->Method(object, arg, ...); ... 34 34 5 The VirtualBox COM/XPCOM API IFoo *foo; /* * Calling IFoo IObject::method(arg, ...) */ rc = object->vtbl->Method(object, args, ..., &foo); As a real-world example of a method invocation, let’s call

location. In other words, to call an object’s method what you need is IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ ## 2 Environment-specific notes rc = object-> object->vtbl->Method(object, arg, ...); ... IFoo *foo; /* * Calling IFoo IObject::method(arg, ...) */ rc = object->vtbl->Method(object, args, ..., &foo); As a real-world example of a method invocation

location. In other words, to call an object’s method what you need is IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ ## 2 Environment-specific notes rc = object-> object->vtbl->Method(object, arg, ...); ... IFoo *foo; /* * Calling IFoo IObject::method(arg, ...) */ rc = object->vtbl->Method(object, args, ..., &foo); As a real-world example of a method invocation

location. In other words, to call an object’s method what you need is IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ ## 2 Environment-specific notes rc = object-> object->vtbl->Method(object, arg, ...); ... IFoo *foo; /* * Calling IFoo IObject::method(arg, ...) */ rc = object->vtbl->Method(object, args, ..., &foo); As a real-world example of a method invocation

location. In other words, to call an object’s method what you need is IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ ## 2 Environment-specific notes rc = object-> object->vtbl->Method(object, arg, ...); ... IFoo *foo; /* * Calling IFoo IObject::method(arg, ...) */ rc = object->vtbl->Method(object, args, ..., &foo); As a real-world example of a method invocation

Environment-specific notes IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ rc = object->vtbl->Method(object, arg, ...); IFoo *foo; /* * Calling IFoo IObject::method(arg, ..

Environment-specific notes IObject *object; nsresult rc; ... /* * Calling void IObject::method(arg, ...) */ rc = object->vtbl->Method(object, arg, ...); ... IFoo *foo; /* * Calling IFoo IObject::method(arg,