public class Program
    {
        private static Program m_Program = null;
        private frmInputForm m_inputForm;

        private Program()
        {
            m_inputForm = new frmInputForm();  
        }

        public static Program GetProgram()
        {
            if (m_Program == null)
            {
                m_Program = new Program();  
            }
            return m_Program; 
        }
        
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(GetProgram().GetInputForm());
        }
        public frmInputForm GetInputForm()
        {
            return m_inputForm; 
        }
    }