C#

<br />
protected override void WndProc(ref Message m)<br />
{<br />
	Graphics g;<br />
	RectangleF rectf;<br />
<br />
	Point pt;<br />
<br />
	switch (m.Msg)<br />
	{<br />
		case WMConsts.WM_NCPAINT :<br />
			IntPtr hrgn = m.WParam;<br />
			if ( hrgn != (IntPtr)1 )<br />
			{<br />
				Region rgn = Region.FromHrgn(hrgn);<br />
				g = CreateGraphics();<br />
				rectf = rgn.GetBounds(g);<br />
				PaintNonClientArea(g, rectf);<br />
			}<br />
			else<br />
			{<br />
				g = CreateGraphics();<br />
				rectf = new RectangleF(0,-23, Width, 23);<br />
				PaintNonClientArea(g, rectf);<br />
				g.Dispose();<br />
			}<br />
			<br />
			//base.WndProc(ref m);<br />
			break;<br />
<br />
		default :<br />
			base.WndProc (ref m);<br />
			break;<br />
	}<br />
}<br />