How do I determine visibility of a control?

Question

I have a TabControl that contains several tabs. Each tab has one UserControl on it. I would like to check the visibility of a control x on UserControl

Answer 1

I'm using this code not only checking all the ancestors visible and also who is the root control. Checking a root is needed when the control is not added on the Mainform.

public static class StratoControlExtension
{
    public static bool TruelyVisible(this Control control, Control expected_root)
    {
        if (control.Parent == null) { return control == expected_root && control.Visible; }
        return control.Parent.TruelyVisible(expected_root) && control.Visible;
    }
}