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

		public virtual void DrawFlatStyleFocusRectangle (Graphics graphics, Rectangle rectangle, ButtonBase button, Color foreColor, Color backColor) {
			// make a rectange to trace around border of the button
			Rectangle trace_rectangle = new Rectangle(rectangle.X, rectangle.Y, Math.Max (rectangle.Width-1, 0), Math.Max (rectangle.Height-1, 0));
			
			Color outerColor = foreColor;
			// adjust focus color according to the flatstyle
			if (button.FlatStyle == FlatStyle.Popup && !button.is_pressed) {
				outerColor = (backColor.ToArgb () == ColorControl.ToArgb ()) ? ControlPaint.Dark(ColorControl) : ColorControlText;				
			}
			
			// draw the outer rectangle
			graphics.DrawRectangle (ResPool.GetPen (outerColor), trace_rectangle);			
			
			// draw the inner rectangle						
			if (button.FlatStyle == FlatStyle.Popup) {
				DrawInnerFocusRectangle (graphics, Rectangle.Inflate (rectangle, -4, -4), backColor);
			} else {
				// draw a flat inner rectangle
				Pen pen = ResPool.GetPen (ControlPaint.LightLight (backColor));
				graphics.DrawRectangle(pen, Rectangle.Inflate (trace_rectangle, -4, -4));				
			}
		}