button

Public Class InvisibleButton
   Inherits Button
   Private ShowMe As Boolean = True
   Protected Overrides Sub OnPaint(ByVal pevent As System.Windows.Forms.PaintEventArgs)
      If ShowMe Then
         MyBase.OnPaint(pevent)
      Else
         pevent.Graphics.FillRectangle(New SolidBrush(Parent.BackColor), New Rectangle(0, 0, Width, Height))
      End If
   End Sub
   Protected Overrides Sub OnClick(ByVal e As System.EventArgs)
      ShowMe = Not ShowMe
      Invalidate()
      MyBase.OnClick(e)
   End Sub
End Class