/// <summary>
 /// Returns the one DemoApplicationContext.
 /// </summary>
 public static SpreadsheetWindowHandler getAppContext()
 {
     if (appContext == null)
     {
         appContext = new SpreadsheetWindowHandler();
     }
     return(appContext);
 }
 /// <summary>
 /// Returns the one DemoApplicationContext.
 /// </summary>
 public static SpreadsheetWindowHandler getAppContext()
 {
     if (appContext == null)
     {
         appContext = new SpreadsheetWindowHandler();
     }
     return appContext;
 }
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            // Start an application context and run one form inside it
            SpreadsheetWindowHandler appContext = SpreadsheetWindowHandler.getAppContext();

            if (appContext.RunForm(new GUI()))
            {
                Application.Run(appContext);
            }
        }