template <class K, class M>
String MakeKey_(const K& k, const M& m)
{
	StringBuffer key;
	RawCat(key, StaticTypeNo<K>());
	RawCat(key, StaticTypeNo<M>());
	key.Cat(k());
	return String(key); // << Add String() here!
}

#include <CtrlLib/CtrlLib.h>
#include <Painter/Painter.h>

using namespace Upp;


struct MyApp : TopWindow {
	Painting painting;
	
	MyApp(){
		Maximize();
		LoadFromFile(painting, GetDesktopFolder() + DIR_SEPS + "Sample50k.Painting");
	}
	
	virtual void Paint(Draw& dw)
	{
		Size sz = GetSize();
		ImageBuffer ib(sz);
		BufferPainter painter(ib);
		painter.Co(true);
		painter.Clear(White());
		
		int64 t0=usecs();
		painter.Paint(painting);
		painter.Finish();
		Title(Format("Render took %lld usecs",usecs(t0)));
		Image im(ib);
		dw.DrawImage(0,0,im);
	}
	
	
	bool Key(dword key, int count){
		switch(key){
			case K_SPACE:
				Refresh();
				return true;
		}
		return false;
	}
};

GUI_APP_MAIN
{
	MyApp app;
	app.MaximizeBox().MinimizeBox().Sizeable();
	app.Run();
}