#include <CtrlLib/CtrlLib.h>
GUI _ APP _ MAIN{
}

#include <CtrlLib/CtrlLib.h>
class MyWindow: public TopWindow {
    public:
    MyWindow{
  Title.MinimizeBox.MaximizeBox
      .Sizeable.SetRect; 
    }
};
 
GUI_APP_MAIN
{
        MyApp.Run;
}

#include <CtrlLib/CtrlLib.h>
 
using namespace Upp;
 
class MyApp : public TopWindow {
        Button button;
 
        void Click {
                if)
                        Break;
        }
 
        typedef MyApp CLASSNAME;
 
public:
        MyApp {
                Title;
                button.SetLabel;
                button <<= THISBACK;
                Add.VSizePos);
        }
};
 
GUI_APP_MAIN
{
        MyApp.Run;
}