#include <gtkmm/button.h>
#include <gtkmm/window.h>
#include <gtkmm/main.h>
#include <iostream>

class HelloWorld : public Gtk::Window
{
	public:
	HelloWorld();
	virtual ~HelloWorld();

	protected:
	//Signal handlers:
	void on_button_clicked();

	//Member widgets:
	Gtk::Button m_button;
};

HelloWorld::HelloWorld()
: m_button("Hello World") // creates a new button with label "Hello World".
{
	// Sets the border width of the window.
	set_border_width(10);

	// When the button receives the "clicked" signal, it will call the
	// on_button_clicked() method defined below.
	m_button.signal_clicked().connect(sigc::mem_fun(*this,
	&HelloWorld::on_button_clicked));

	// This packs the button into the Window (a container).
	add(m_button);

	// The final step is to display this newly created widget...
	m_button.show();
}

HelloWorld::~HelloWorld()
{

}

void HelloWorld::on_button_clicked()
{
	std::cout << "Hello World" << std::endl;
}

int main (int argc, char *argv[])
{
	Gtk::Main kit(argc, argv);

	HelloWorld helloworld;

	//Shows the window and returns when it is closed.
	Gtk::Main::run(helloworld);

	return 0;
}