class KeyEventReceiver : public IEventReceiver
{
    public:
        bool OnEvent(const SEvent &event)
        {
            if(event.EventType == EET_KEY_INPUT_EVENT && event.KeyInput.PressedDown)
            {
                std::cout << "key: " << event.KeyInput.Char << std::endl;
            }

            return false;
        }
};

class GuiEventReceiver : public IEventReceiver
{
    public:
        bool OnEvent(const SEvent &event)
        {
            if(event.EventType == EET_GUI_EVENT && event.GUIEvent.EventType == gui::EGET_BUTTON_CLICKED)
            {
                std::cout << "bouton: " << event.GUIEvent.Caller << std::endl;
            }

            return false;
        }
};

int main()
{
    // IEventReceiver
    KeyEventReceiver keyEvents;
    GuiEventReceiver GuiEvents;

    // creation de la fenetre
    IrrlichtDevice *device = createDevice(video::EDT_DIRECT3D9, core::dimension2d<s32>(110, 40), 32, false, false, true, &keyEvents);
    video::IVideoDriver *driver = device->getVideoDriver();
    gui::IGUIEnvironment *guienv = device->getGUIEnvironment();

    // ajout d'un bouton
    guienv->addButton(core::rect<s32>(10, 10, 100, 30), 0, 1, L"Bouton de test");

    // assigne le IEventReceiver perso au guienv
    guienv->setUserEventReceiver(&GuiEvents);

    // dessine
    while(device->run())
    {
        driver->beginScene(true, true, video::SColor(0, 100, 100, 100));
        guienv->drawAll();
        driver->endScene();
    }

    device->drop();

    return 0;
}