C# winform check if control is physicaly visible

Question

Is it possible to determine if at least one pixel of a control can be seen (by a property or maybe using event notification).

NB : I am not looking for the Visible p

Answer 1

You can check for visibility of parent control.

    protected override void OnParentVisibleChanged(EventArgs e)
    {
        base.OnParentVisibleChanged(e);
        isVisible = true;
    }