Letters not showing up in redbook example in C#

OpenGL OpenGL: Basic Coding
1

The following code is supposed to draw three 'F’s across the opengl window. This is VS 2008 Express C#. I get the correct background color but, not the bitmapped letters being drawn. What’s the problem with my code?

Please help.

"
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Tao.OpenGl;
using Tao.Platform.Windows;

namespace fonttestredbook
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();

		m_opengl.InitializeContexts();

		byte[] rasters = { 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00,
						 0xff, 0x00, 0xff, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xff, 0xc0, 0xff, 0xc0 };

		Gl.glPixelStorei(Gl.GL_UNPACK_ALIGNMENT, 1);
		Gl.glClearColor(0.0f, 1.0f, 0.0f, 0.0f);
		Gl.glClear(Gl.GL_COLOR_BUFFER_BIT);

		Gl.glColor3f(1.0f, 1.0f, 1.0f);

		Gl.glRasterPos2i(15, 15);

		Gl.glBitmap(10, 12, 0.0f, 0.0f, 11.0f, 0.0f, rasters);
		Gl.glBitmap(10, 12, 0.0f, 0.0f, 11.0f, 0.0f, rasters);
		Gl.glBitmap(10, 12, 0.0f, 0.0f, 11.0f, 0.0f, rasters);

		Gl.glFlush();
	}
}

}"

Best Wishes,
HowitZer

2

Setting the raster pos to 0,0 showed my letters. I guess the raster pos was invalid and so nothing was drawn.