private void OnAboutClosed(object sender, EventArgs e)
{
this.about = null;
}
protected override void ExitThreadCore()
{
if (about != null)
{
about.Close();
about = null;
}
notifyIcon.Visible = false;
base.ExitThreadCore();
}
private void OnAbout(object sender, EventArgs e)
{
if (about == null)
{
about = new About();
about.FormClosed += OnAboutClosed;
about.Show();
}
else
{
about.Activate();
}
}