static void Main() { // SpreadsheetInfo.SetLicense("EQU2-1000-0000-000U"); Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.DoEvents(); bool bInitiallyOwnd = true; bool bIsCreated = true; Mutex m = new Mutex(bInitiallyOwnd, Application.ProductName, out bIsCreated); if (!(bInitiallyOwnd && bIsCreated)) { Application.Exit(); } else { MyChecker checker = new MyChecker(); checker.IsAuthorizedbyAuthorizationFile("c:\\1.key"); if (false) { MessageBox.Show("软件未授权。\n即将退出。", "提示"); return; } Application.Run(new Form1()); m.ReleaseMutex(); } }