protected override void OnPaintBackground (PaintEventArgs e)
{
base.OnPaintBackground (e);
//Rectangle affected_bounds = new Rectangle (Point.Empty, this.Size);
//ToolStripRenderEventArgs tsrea = new ToolStripRenderEventArgs (e.Graphics, this, affected_bounds, SystemColors.Control);
//this.Renderer.DrawToolStripBackground (tsrea);
}