private void pOMPAToolStripMenuItem_Click(object sender, EventArgs e)
{
if (pompa == null)
{
pompa = new Form_POMPA();
pompa.FormClosed += new FormClosedEventHandler(formpompa);
pompa.Show();
}
else
{
pompa.Activate();
}
}
void formpompa(Object sender, FormClosedEventArgs e)
{
pompa = null;
}