private void oKToolStripMenuItem_Click(object sender, EventArgs e)
{
//if (mdi2 == null)
//{
mdi2 = new MDI2();
//mdi2.MdiParent = this;
mdi2.FormClosed += new FormClosedEventHandler(mdi2_FormClosed);
mdi2.Show();
//}
//else mdi2.Activate();
}
private void mdi2_FormClosed(object sender, FormClosedEventArgs e)
{
mdi2 = null;
}