CMake/Tests/FindGTK2/gtkmm/main.cpp

#include <gtkmm.h>
#include "helloworld.h"

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;
}