class CalculatorButton : public Button {
	public:
		CalculatorButton::CalculatorButton(	Window * pParent,
							const Rect rFrame,
							const String &pLabel,
							unsigned int nWindowLayoutFlags,
							unsigned int uiVKey);
		CalculatorButton::CalculatorButton(	Window * pParent,
							const Rect rFrame,
							const String &pLabel,
							unsigned int nWindowLayoutFlags);
		void OnClicked();
	private:
		Button	*	pButton;
};