Public Class myGroupbox : Inherits GroupBox
 
   Protected Overrides Sub OnPaint(e As System.Windows.Forms.PaintEventArgs)
      e.Graphics.Clear(If(Enabled, Color.AliceBlue, Color.Yellow))
      'MyBase.OnPaint(e)
      e.Graphics.DrawString(Enabled.ToString, Font, Brushes.Black, _
        ClientRectangle)
   End Sub
 
End Class

(Rechtschreibfehler urheberrechtlich geschützt)