namespace System.Windows.Forms
{
    [DefaultBindingProperty("Text")]
    [DefaultEvent("TextChanged")]
    [Designer("System.Windows.Forms.Design.TextBoxBaseDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
    public abstract class TextBoxBase : Control
    {
        public virtual Point GetPositionFromCharIndex(int index);
    }
}