private void blueToolStripMenuItem_Click(object sender, EventArgs e) { if (BTForm == null) { BTForm = new BlueTurtleForm(); BTForm.MdiParent = this; BTForm.FormClosed += BTForm_FormClosed; BTForm.Show(); } else { BTForm.Activate(); } }
private void BTForm_FormClosed(object sender, FormClosedEventArgs e) { BTForm = null; }