public MDIForm()
{
InitializeComponent();
if (helpForm == null)
{
helpForm = new helpForm();
helpForm.MdiParent = this;
helpForm.WindowState = FormWindowState.Maximized;
helpForm.Show();
helpForm.FormClosed += new FormClosedEventHandler(helpForm_FormClosed);
}
}
private void helpToolBtn_Click(object sender, EventArgs e)
{
if (helpForm == null)
{
helpForm = new helpForm();
helpForm.MdiParent = this;
helpForm.WindowState = FormWindowState.Maximized;
helpForm.FormClosed += new FormClosedEventHandler(helpForm_FormClosed);
helpForm.Show();
}
else {
helpForm.WindowState = FormWindowState.Maximized;
helpForm.Activate();
helpForm.Focus();
}
}
void helpForm_FormClosed(object sender, FormClosedEventArgs e)
{
helpForm.Dispose();
helpForm = null;
}