MissionPlanner.Controls.PreFlight.CheckListControl.OnVisibleChanged C# (CSharp) Method

        protected override void OnVisibleChanged(EventArgs e)
        {
            base.OnVisibleChanged(e);

            if (Visible)
            {
                timer1.Enabled = true;
            }
            else
            {
                timer1.Enabled = false;
            }
        }
    }