private void Default_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Escape)
            {
                ESC_timer.Stop();
                EscTimeDisplay.Text = "0";

                ESC_timer.Dispose();
            }
        }
 private void NoticeForm_KeyDown(object sender, KeyEventArgs e)
 {
     if (e.KeyCode == Keys.Escape)
     {
         ESC_timer.Start();
     }
     else if (e.KeyCode == Keys.A)
     {
         Thread t = new Thread(new ThreadStart(Howling));
         t.Start();
         //wav파일이 들어 있는 경로를 설정해주세요
     }
     else if (e.KeyCode == Keys.S)
     {
         this.WindowState = FormWindowState.Minimized;
     }
 }