/* OUTPUT
... Draw ImageView ...
View::render
ImageView::render
... Draw Sprite ...
View::render
ImageView::render
Sprite::render
*/

////////// View ///////////////
class View{
public:
	void Render(){
		render();
	}
protected:
	virtual void render(){
		std::cout << "View::render" << std::endl;
	};
};
////////// ImageView ///////////////
class ImageView : public View{
public:
protected:
	virtual void render(){
		View::render();
		std::cout << "ImageView::render" << std::endl;
	}
};
////////// Sprite ///////////////
class Sprite : public ImageView{
public:
protected:
	virtual void render(){
		ImageView::render();
		std::cout << "Sprite::render" << std::endl;
	}
};
////////// Utility ///////////////
void Draw(View *vw){
	vw->Render();
}
////////// main ///////////////
int main(){

	std::cout << "... Draw ImageView ..." << std::endl;
	ImageView *imgvw = new ImageView;
	Draw(imgvw);
	delete imgvw;

	std::cout << "... Draw Sprite ..." << std::endl;
	Sprite *sp = new Sprite;
	Draw(sp);
	delete sp;
	
	return 0;
}