System.Windows.Forms.ThemeWin32Classic.CPDrawGrid C# (CSharp) Method

		public override void CPDrawGrid (Graphics graphics, Rectangle area, Size pixelsBetweenDots, Color backColor) {
			Color	foreColor;
			int	h;
			int	b;
			int	s;

			ControlPaint.Color2HBS(backColor, out h, out b, out s);
			
			if (b>127) {
				foreColor=Color.Black;
			} else {
				foreColor=Color.White;
			}

			// still not perfect. it seems that ms calculates the position of the first dot or line

			using (Pen pen = new Pen (foreColor)) {
				pen.DashPattern = new float [] {1.0f, pixelsBetweenDots.Width - 1};
				
				for (int y = area.Top; y < area.Bottom; y += pixelsBetweenDots.Height)
					graphics.DrawLine (pen, area.X, y, area.Right - 1, y);
			}
		}