private void button4_Click(object sender, EventArgs e)
        {
            frmAjustes ajustes = new frmAjustes();

            ajustes.Show();
            this.Hide();
        }
        private void pictureBox2_Click(object sender, EventArgs e)
        {
            frmAjustes ajustes = new frmAjustes();

            ajustes.Show();
            this.Hide();
        }