private void log_on_Click(object sender, EventArgs e)
        {
            Sound.PlaySE("se_buttonclick");
            ZC Logon = new ZC();

            Logon.Shown      += BlockWindow;
            Logon.FormClosed += UnblockWindow;
            Logon.OnShow();
        }
 private void log_on_Click(object sender, EventArgs e)
 {
     Sound.PlaySE("se_buttonclick");
     ZC Logon = new ZC();
     Logon.Shown += BlockWindow;
     Logon.FormClosed += UnblockWindow;
     Logon.OnShow();
 }