static void Main(string[] args) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); using (TrayManager trayManager = new TrayManager()) { TrayOnlyApplication app = new TrayOnlyApplication(); app.StartupNextInstance += (s, e) => trayManager .SetToolTipText(e.CommandLine.Count > 0 ? e.CommandLine[0] : "<no value given>"); app.Run(args); } }