GUI Windows Form C#

/*
Code revised from chapter 7
GDI+ Custom Controls with Visual C# 2005
By Iulian Serban, Dragos Brezoi, Tiberiu Radu, Adam Ward 
Language English
Paperback 272 pages [191mm x 235mm]
Release date July 2006
ISBN 1904811604
Sample chapter
http://www.packtpub.com/files/1604_CustomControls_SampleChapter.pdf
For More info on GDI+ Custom Control with Microsoft Visual C# book 
visit website www.packtpub.com 
*/ 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Printing;
namespace PrintApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Image imageHeader = new Bitmap(50, 50);
            Graphics img = Graphics.FromImage(imageHeader);
            img.DrawEllipse(Pens.Black, 0, 0, 45, 45);
            img.DrawString("LOGO", this.Font, Brushes.Black, new PointF(7, 16));
            img.Dispose();
            string textDocument;
            textDocument = "";
            for (int i = 0; i < 60; i++)
            {
                for (int j = 0; j < i; j++)
                    textDocument += " ";
                textDocument += "The quick brown fox jumps over the lazy dog\n";
            }
            SimpleReportPrinter printDocument = new SimpleReportPrinter(imageHeader, textDocument, this.Font);
            printDocument.Print(false);
        }
        private System.ComponentModel.IContainer components = null;
        /// 
        /// Clean up any resources being used.
        /// 

        /// true if managed resources should be disposed; otherwise, false.
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }
        #region Windows Form Designer generated code
        /// 
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 

        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.BackColor = System.Drawing.SystemColors.ActiveCaption;
            this.button1.Location = new System.Drawing.Point(95, 107);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(100, 30);
            this.button1.TabIndex = 0;
            this.button1.Text = "Print";
            this.button1.UseVisualStyleBackColor = false;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);
        }
        #endregion
        private System.Windows.Forms.Button button1;
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
        
    }
    public class TextDispenser
    {
        int _start = 0;
        string _text = null;
        Font _fnt;
        public TextDispenser(string text, Font fnt)
        {
            _start = 0;
            _text = text;
            _fnt = fnt;
        }
        public bool DrawText(Graphics target, Graphics measurer, RectangleF r, Brush brsh)
        {
            if (r.Height < _fnt.Height)
                throw new ArgumentException("The rectangle is not tall enough to fit a single line of text inside.");
            int charsFit = 0;
            int linesFit = 0;
            int cut = 0;
            string temp = _text.Substring(_start);
            StringFormat format = new StringFormat(StringFormatFlags.FitBlackBox | StringFormatFlags.LineLimit);
            //measure how much of the string we can fit into the rectangle
            measurer.MeasureString(temp, _fnt, r.Size, format, out charsFit, out linesFit);
            cut = BreakText(temp, charsFit);
            if (cut != charsFit)
                temp = temp.Substring(0, cut);
            bool h = true;
            h &= true;
            target.DrawString(temp.Trim(' '), _fnt, brsh, r, format);
            _start += cut;
            if (_start == _text.Length)
            {
                _start = 0; //reset the location so we can repeat the document
                return true; //finished printing
            }
            else
                return false;
        }
        private static int BreakText(string text, int approx)
        {
            if (approx == 0)
                throw new ArgumentException();
            if (approx < text.Length)
            {
                //are we in the middle of a word?
                if (char.IsLetterOrDigit(text[approx]) && char.IsLetterOrDigit(text[approx - 1]))
                {
                    int temp = text.LastIndexOf(' ', approx, approx + 1);
                    if (temp >= 0)
                        return temp;
                }
            }
            return approx;
        }
    }
    public class SimpleReportPrinter
    {
        Image _header = null;
        string _text = null;
        int _pageNumber = 0;
        PrintDocument _prtdoc = null;
        TextDispenser _textDisp = null;
        public SimpleReportPrinter(Image header, string text, Font fnt)
        {
            _header = (Image)(header.Clone());
            _text = text;
            _prtdoc = new PrintDocument();
            _prtdoc.PrintPage += new PrintPageEventHandler(_prtdoc_PrintPage);
            _textDisp = new TextDispenser(_text, fnt);
        }
        public void Print(bool hardcopy)
        {
            //create a PrintDialog based on the PrintDocument
            PrintDialog pdlg = new PrintDialog();
            pdlg.Document = _prtdoc;
            //show the PrintDialog
            if (pdlg.ShowDialog() == DialogResult.OK)
            {
                //create a PageSetupDialog based on the PrintDocument and PrintDialog
                PageSetupDialog psd = new PageSetupDialog();
                psd.EnableMetric = true; //Ensure all dialog measurements are in metric
                psd.Document = pdlg.Document;
                //show the PageSetupDialog
                if (psd.ShowDialog() == DialogResult.OK)
                {
                    //apply the settings of both dialogs
                    _prtdoc.DefaultPageSettings = psd.PageSettings;
                    //decide what action to take
                    if (hardcopy)
                    {
                        //actually print hardcopy
                        _prtdoc.Print();
                    }
                    else
                    {
                        //preview onscreen instead
                        PrintPreviewDialog prvw = new PrintPreviewDialog();
                        prvw.Document = _prtdoc;
                        prvw.ShowDialog();
                    }
                }
            }
        }
        private void _prtdoc_PrintPage(object sender, PrintPageEventArgs e)
        {
            e.Graphics.Clip = new Region(e.MarginBounds);
            //this method does all our printing work
            Single x = e.MarginBounds.Left;
            Single y = e.MarginBounds.Top;
            //draw the header image
            if (_pageNumber++ == 0)
            {
                e.Graphics.DrawImage(_header, x, y);
                y += _header.Height + 30;
            }
            RectangleF mainTextArea = RectangleF.FromLTRB(x, y, e.MarginBounds.Right, e.MarginBounds.Bottom);
            //draw the main part of the report
            if (_textDisp.DrawText(e.Graphics, e.PageSettings.PrinterSettings.CreateMeasurementGraphics(), mainTextArea, Brushes.Black))
            {
                e.HasMorePages = false; //the end has been reached
                _pageNumber = 0;
            }
            else
                e.HasMorePages = true;
            //watermark
            e.Graphics.TranslateTransform(200, 200);
            e.Graphics.RotateTransform(e.PageSettings.Landscape ? 30 : 60);
            e.Graphics.DrawString("CONFIDENTIAL", new Font("Courier New", 75, FontStyle.Bold), new SolidBrush(Color.FromArgb(64, Color.Black)), 0, 0);
        }
    }
}