#include <CtrlLib/CtrlLib.h>

using namespace Upp;

struct MyApp : TopWindow {
	MyApp()
	{
		Sizeable().Zoomable().CenterScreen().SetRect(0, 0, 640, 480);
	}
	
	void Paint(Draw& w) override
	{
		Size sz = GetSize();
		w.DrawRect(sz, Red());
		StdCenterDisplay().Paint(w, sz, "Centered", White, Null, 0L);  // <-- There are ready-made displays which you can use in-place (they are functional globals)
	}

};

GUI_APP_MAIN
{
	MyApp().Run();
}