[WPF] Mutex

• 프로그램 한번만 실행.

        Mutex mutex;

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);

            string mutexName = "program";
            bool createNew;

            mutex = new Mutex(true, mutexName, out createNew);
            
            if(!createNew)
            {
                Shutdown();
            }
        }

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