struct MyButton : Moveable<MyButton>, Button
{
    // note: alwasy default to false becasue
    // existing U++ user are used to this behaviour
    //
    MyButton(bool toBeOwned=false)
    {
        SetOwned(toBeOwned);
    }

    virtual ~MyButton()
    {
          DUMP("Yes, I am properly destructed!!!");
    }
}; 

class App : public TopWindow
{
public:
    App()
    {
         Button * p=new MyButton(true);
         Button * p2=new MyButton();

         p->SetLabel("Button 1").TopSizeZ(2,20).LeftSize(2, 60);
         p2->SetLabel("Button 2").TopSizeZ(40,20).LeftSize(2, 60);
         Add(*p); // p will be destructed because we SetOwned in
                 // its constructor;
         // or (*this) << p;

         Add(*p2, 1);
    }
};