#include <Wt/WApplication>
#include <Wt/WContainerWidget>
#include <Wt/WTimer>

using namespace Wt;

class App : public WApplication {
public:
    App(const WEnvironment& env):
    WApplication(env) {
        Wt::WTimer *timer = new Wt::WTimer(root());
        timer->setInterval(3 * 1000);
        timer->start();
        timer->timeout().connect(this, &App::f);
    }

    void f()
    { }
};

WApplication* createApplication(const WEnvironment& env) {
    return new App(env);
}

int main(int argc, char** argv) {
    return WRun(argc, argv, &createApplication);
}