Allow user to set the application start up with Windows.

Require a checkbox to switch between startup or not.

Microsoft.Win32.RegistryKey StartUpRKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
string AppKeyName = "ShrinkerApp";

        public void StartUpWithWindow()
        {
            if(!StartedUp)
                StartUpRKey.SetValue(AppKeyName, Application.ExecutablePath.ToString());
        }

        public void StopStartUp()
        {
            if(StartedUp)
                StartUpRKey.DeleteValue(AppKeyName, false);
        }

        public bool StartedUp
        {
            get
            {
                return (StartUpRKey.GetValue(AppKeyName) != null);
            }
        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked)
            {
                StartUpWithWindow();
            }
            else
            {
                StopStartUp();
            }
        }

        public FrmMain()
        {
            InitializeComponent();
            if (StartedUp)
            {
                checkBox1.Checked = true;
            }
        }

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