#ifndef SINGLE_APP_H
#define SINGLE_APP_H

#include <CtrlLib/CtrlLib.h>
using namespace Upp;

class UniqueWindow : public TopWindow
{
public:
	typedef UniqueWindow CLASSNAME;
	UniqueWindow(){}
};

inline bool CreateSingleApp(String name, String unique, bool message = true)
{
#ifdef PLATFORM_WIN32
	name << unique;
	if(::FindWindow(NULL, name))
	{
		if (message)
			Exclamation("Another instance of application already exists!");
		return false;
	}
	Single<UniqueWindow>().SetRect(-1, -1, 1, 1);
	Single<UniqueWindow>().Hide();
	Single<UniqueWindow>().Title(name);
	Single<UniqueWindow>().Open();
#endif
	return true;
}

#endif // SINGLE_APP_H

GUI_APP_MAIN
{
	if (!CreateSingleApp("SingleApp Test", "##SingleApp##1.0"))
		return;

	MainWindow().Run();
}