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;
}
