private void MainGoToDesignBtn_Click(object sender, EventArgs e)
        {
            if (ldf == null)
            {
                ldf = new LevelDesignMain();
                ldf.FormClosed += Ldf_FormClosed;
                //gf.FormClosed += Gf_FormClosed;
                ldf.Show();
                this.Hide();
            }

            else
            {
                ldf.Activate();
            }

            //ListPanel[2].Visible = true;
            //ListPanel[2].BringToFront();
            //ListPanel[0].SendToBack();

            //MainMenuPanel.Visible = false;
            //LevelDesignPanel.BringToFront();

            //panel1.Show();
            //panel1.BringToFront();
        }
 private void Ldf_FormClosed(object sender, FormClosedEventArgs e)
 {
     ldf = null;
     //throw new NotImplementedException();
 }