private void redToolStripMenuItem_Click(object sender, EventArgs e) { if (RTForm == null) { RTForm = new RedTurtleForm(); RTForm.MdiParent = this; RTForm.FormClosed += RTForm_FormClosed; RTForm.Show(); } else { RTForm.Activate(); } }
private void RTForm_FormClosed(object sender, FormClosedEventArgs e) { RTForm = null; }