struct Foo : Pte<Foo> {
    Button but;
};

class Test : public TopWindow {
public:
	void Start() {
		Foo data;
		ptr = &data;
		str << "During: " << (void*)~ptr << "\n";
	}
	Ptr<Foo> ptr;
	String str;
};

GUI_APP_MAIN
{
	Test t;
	t.str << "Before: " << (void*)~t.ptr << "\n";
	t.Start();
	t.Run();
	t.str << "After:  " << (void*)~t.ptr;
	Exclamation(DeQtfLf(t.str));
}

Before: 0x0
During: 0x6fad31f508
After:  0x0