private void acercaDeToolStripMenuItem_Click(object sender, EventArgs e) { if (acerca == null) { acerca = new AcercaD(); acerca.MdiParent = this; acerca.FormClosed += new FormClosedEventHandler(acerca_FormClosed); acerca.Show(); if (fa != null) { fa.Close(); } if (cf != null) { cf.Close(); } if (f1 != null) { f1.Close(); } if (ac != null) { ac.Close(); } } }
private void acerca_FormClosed(object sender, FormClosedEventArgs e) { acerca = null; }