gatuna/win/gatuna-client/Program.cs

namespace gatuna_client;

static class Program
{
    [STAThread]
    static void Main()
    {
        ApplicationConfiguration.Initialize();

        var form = new MainForm();

        using var tray = new NotifyIcon
        {
            Icon = SystemIcons.GetStockIcon(StockIconId.NetworkConnect, 32),
            Text = "gatuna",
            Visible = true,
        };

        tray.ContextMenuStrip = new ContextMenuStrip();
        tray.ContextMenuStrip.Items.Add("Show", null, (_, _) =>
        {
            form.Show();
            form.WindowState = FormWindowState.Normal;
            form.Activate();
        });
        tray.ContextMenuStrip.Items.Add("-");
        tray.ContextMenuStrip.Items.Add("Exit", null, (_, _) =>
        {
            tray.Visible = false;
            form.Close();
        });
        tray.DoubleClick += (_, _) =>
        {
            form.Show();
            form.WindowState = FormWindowState.Normal;
            form.Activate();
        };

        Application.Run(form);
    }
}