private void btn_kelimeEkle_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
 {
     if (KE == null)
     {
         KE             = new KelimeEkle();
         KE.MdiParent   = this;
         KE.FormClosed += KE_FormClosed;
         KE.Show();
     }
     else
     {
         KE.Activate();
     }
 }
 private void KE_FormClosed(object sender, FormClosedEventArgs e)
 {
     KE = null;
 }