System.WindowsConsoleDriver.MoveBufferArea C# (CSharp) Method

		public void MoveBufferArea (int sourceLeft, int sourceTop, int sourceWidth, int sourceHeight,
					int targetLeft, int targetTop, Char sourceChar,
					ConsoleColor sourceForeColor, ConsoleColor sourceBackColor)
		{
			if (sourceForeColor < 0)
				throw new ArgumentException ("Cannot be less than 0.", "sourceForeColor");

			if (sourceBackColor < 0)
				throw new ArgumentException ("Cannot be less than 0.", "sourceBackColor");

			if (sourceWidth == 0 || sourceHeight == 0)
				return;

			ConsoleScreenBufferInfo info = new ConsoleScreenBufferInfo ();
			GetConsoleScreenBufferInfo (outputHandle, out info);
			CharInfo [] buffer = new CharInfo [sourceWidth * sourceHeight];
			Coord bsize = new Coord (sourceWidth, sourceHeight);
			Coord bpos = new Coord (0, 0);
			SmallRect region = new SmallRect (sourceLeft, sourceTop, sourceLeft + sourceWidth - 1, sourceTop + sourceHeight - 1);
			fixed (void *ptr = &buffer [0]) {
				if (!ReadConsoleOutput (outputHandle, ptr, bsize, bpos, ref region))
					throw new ArgumentException (String.Empty, "Cannot read from the specified coordinates.");
			}

			int written;
			short attr  = GetAttrForeground (0, sourceForeColor);
			attr  = GetAttrBackground (attr, sourceBackColor);
			bpos = new Coord (sourceLeft, sourceTop);
			for (int i = 0; i < sourceHeight; i++, bpos.Y++) {
				FillConsoleOutputCharacter (outputHandle, sourceChar, sourceWidth, bpos, out written);
				FillConsoleOutputAttribute (outputHandle, attr, sourceWidth, bpos, out written);
			}

			bpos = new Coord (0, 0);
			region = new SmallRect (targetLeft, targetTop, targetLeft + sourceWidth - 1, targetTop + sourceHeight - 1);
			if (!WriteConsoleOutput (outputHandle, buffer, bsize, bpos, ref region))
				throw new ArgumentException (String.Empty, "Cannot write to the specified coordinates.");
		}