private void التكهينToolStripMenuItem_Click(object sender, EventArgs e)
{
if (takhen == null)
{
takhen = new takhen();
takhen.MdiParent = this;
takhen.FormClosed += new FormClosedEventHandler(takhen_FormClosed);
takhen.Show();
}
else
{
takhen.Activate();
}
}
void takhen_FormClosed(object sender, FormClosedEventArgs e)
{
takhen = null;
//throw new NotImplementedException();
}