class Widget
{
public:
	Widget();
	virtual ~Widget();
	virtual void draw();
	virtual void update();
protected:
        Widget *parent;

};

class compositeWidget : public widget
{
public:
	virtual void draw()
	{
		//some drawing code
		for (int i = 0; i < widgets.size(); i++)
			widgets[i]->draw();
	}

	virtual void update()
	{
		//some drawing code
		for (int i = 0; i < widgets.size(); i++)
			widgets[i]->update();
	}
	
	virtual void add(Widget *widget)
	{
		widget->parent = this;
		widgets.push_back(widget);
	}
               
private:
	std::vector<Widget *> widgets;
};