Errata

New ImageIO.cs And MetafileConvert.cs Files
On the companion CD, files ImageIO.cs (CodeDialog
BoxesImageIO) and MetafileConvert.cs (CodeMetafilesMetafileConvert) contain
errors in their code. The files with the corrected code are available now for
download.The
following file is available for download from the Microsoft Download
Center:Code.exeFor
additional information about how to download Microsoft Support files, click the
following article number to view the article in the Microsoft Knowledge Base:119591 How to Obtain Microsoft Support Files from Online ServicesMicrosoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on secure servers that prevent any unauthorized
changes to the file.

Correction To AddFive Routine
On page 14, in the AddFive routine, Change: "i +
5;" To: "i += 5;"

Missing ")" In Code Sample
There is an error in the "switch and case" construction coding example at the bottom of page 56. The end of line four is missing a closing parenthesis.

Change:
switch (MessageBox.Show("Do you want to create a new file?",
"WonderWord",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question)

{
case DialogResult.Yes:
// "Yes" processing
break;To:
switch (MessageBox.Show("Do you want to create a new file?",
"WonderWord",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question))

{
case DialogResult.Yes:
// "Yes" processing
break;

Incorrect Chapter Cross-Reference In First Paragraph Of
Page
In the first paragraph on page 203, in the fourth
line,Change: "find out about in Chapter 11...."
To:"find out about in Chapter 13...."

Incorrect Hebrew Character Leading To Misspelling Of "Boker"
In the second paragraph of the "Right-to-Left Problems" section on
page 252, in the second line, replace the sentence that is there with the
following: "We're going to type the Hebrew for 'good morning,' which
is בוקר טוב, commonly transliterated as boker tov." In the second
sentence of the second paragraph under the table on page 253, replace the
sentence "So to type...(the c key)." with the following: "So, to type
the Hebrew phrase shown above into TypeAway, you need to type the letters in
this order: bet (the c key), vav (the u key) qof (the e key), resh (the r key),
space, tet (the y key), vav (the u key), and bet (the c key)."

OnPage Should Be DoPage
There are two typographical errors at the bottom of page
298. Change: "The OnPage method changes..." To:
"The DoPage method changes..." Change: "OnPage then
switches..." To: "DoPage then switches..."

Two Incorrect Values In TestRenderingHint Enumeration
Table
On page 403, In the TextRenderingHint Enumeration table,
the fourth and fifth lines should be switched and the values in the second
column changed. Change the fourth row from: "AntiAlias 3
Anti-aliasing, no grid fitting"To: "AntiAliasGridFit 3
Anti-aliasing with grid fitting"And Change the fifth row
from: "AntiAliasGridFit 4 Anti-aliasing with grid fitting"
To: "AntiAlias 4 Anti-aliasing, no grid fitting"

Error In Code Sample
On page 472, there is an error in the JeuDeTaquin.cs code sample.

Change:
"BorderStyle = FormBorderStyle.Fixed3D;"

To:
"FormBorderStyle = FormBorderStyle.Fixed3D;"

Incorrect URL
The ImageFromWeb.cs program defines an incorrect string variable named 'strUrl' located approximately in the middle of Page 489.Change:"string strUrl ="http://images.jsc.nasa.gov/images/pao/AS11/10075267.jpg";"To:"string strUrl ="http://images.jsc.nasa.gov/lores/AS11-40-5903.jpg";"

Single Class Should Be Single Structure
There is an incorrect statement in the middle of the third
paragraph on page 770. Change: "The point size has to be
converted from a string back to a float using the static Parse method of the
Single class." To: "The point size has to be converted from a
string back to a float using the static Parse method of the Single
structure."

Correction to MetafileConvert.cs Code
On pages 1112 and 1113, replace the MetafileConvert.cs code with
the following:
//----------------------------------------------
// MetafileConvert.cs (c) 2001 by Charles Petzold
//----------------------------------------------
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO; // For Path class
using System.Windows.Forms;

class MetafileConvert: MetafileViewer
{
public new static void Main()
{
Application.Run(new MetafileConvert());
}
public MetafileConvert()
{
Text = strProgName = "Metafile Convert";
}
protected override void MenuFileSaveAsOnClick(object obj, EventArgs ea)
{
SaveFileDialog dlg = new SaveFileDialog();

if (strFileName != null && strFileName.Length > 0)
dlg.InitialDirectory = Path.GetDirectoryName(strFileName);

dlg.FileName = Path.GetFileNameWithoutExtension(strFileName);
dlg.AddExtension = true;
dlg.Filter = "Windows Bitmap (*.bmp)|*.bmp|" +
"Graphics Interchange Format (*.gif)|*.gif|" +
"JPEG File Interchange Format (*.jpg)|" +
"*.jpg;*.jpeg;*.jfif|" +
"Portable Network Graphics (*.png)|*.png|" +
"Tagged Image File Format (*.tif)|*.tif;*.tiff";

ImageFormat[] aif = { ImageFormat.Bmp, ImageFormat.Gif,
ImageFormat.Jpeg, ImageFormat.Png,
ImageFormat.Tiff };

if (dlg.ShowDialog() == DialogResult.OK)
{
Bitmap bm = MetafileToBitmap(mf);

try
{
bm.Save(dlg.FileName, aif[dlg.FilterIndex - 1]);
// bm.Save(dlg.FileName);
}
catch (Exception exc)
{
MessageBox.Show(exc.Message, Text);
}
}
}
Bitmap MetafileToBitmap(Metafile mf)
{
Graphics grfx = CreateGraphics();
int cx = (int) (grfx.DpiX * mf.Width / mf.HorizontalResolution);
int cy = (int) (grfx.DpiY * mf.Height / mf.VerticalResolution);
Bitmap bm = new Bitmap(cx, cy, grfx);
grfx.Dispose();

grfx = Graphics.FromImage(bm);
grfx.DrawImage(mf, 0, 0, cx, cy);
grfx.Dispose();

return bm;
}
}

Creating An Empty Project Only Valid For Visual Studio.Net
On page 4, there is a description on how to create an empty project. The option of creating an empty project is available with Visual Studio .NET, but not with Visual C# .NET Standard Edition. We have made available a file that allows you to add an empty project in Visual C#.Net. Download and save the file emptypro.exe onto your hard disk, then double-click the file to extract the file CSharpExForEmptyProject.vsdir into the Program Files Microsoft Visual Studio .NETVC#CSharpProjects folder.
The following file is available for download from the Microsoft Download Center: emptypro.exe
http://download.microsoft.com/download/mspresspub/emptypro/1.0/nt5xp/en-us/emptypro.exe
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

Typographical Error There is a typographical error on page 12 in the second-to-the-last paragraph. Change: "Date types don't need..." To: "Data types don't need..."

Int16 Should Be Int32 There are two incorrect references to Int16 in the middle of page 45. Change: "is an alias for the Int16 structure." To: "is an alias for the Int32 structure." Also change: "System.Int16 a = 55;" To: "System.Int32 a = 55;"

SystemColor Should Be SystemColors There is an error in the code samples on page 116 and 118. The four instances total of "SystemColor" on pages 116 and 118 should be changed to "SystemColors".

Incorrect Capitalization In Code Sample The beginning of the Caret class towards the bottom of Page 244 contains five instances of the following program instruction: [DLLImport("user32.dll")] When the reader attempts to compile the Caret.cs file, the following error message is thrown: ...Caret.cs(13): The type or namespace name 'DLLImport' could not be found (are you missing a using directive or an assembly reference?) The reason the compiler generated this error is because the two letter "L's" in the word "DLLImport" are capitalized. (Please note an example of the proper way to write this statement can be found on the sixth line of Page 239.) Error Solution: Change the two upper case letter "L's" to lower case letter "l's." Correction: The beginning of the Caret class towards the bottom of Page 244 should contain five instances of the following program instruction: [DllImport("user32.dll")]

Incorrect Square Roots Within Graphic At Top Of Page On page 289, in the graphic (G07PL09) on the top of page 289, all instances (8) showing the square root of 2 should instead show the square root of 1/2.

Remove Extra Space From Code The seventh line from the end of the AllAboutFont.cs program located on Page 382 states: "GdiVerticalFont : " + Font.GdiVerticalFont + "
" + Remove the space between the Font property and the colon character in the aforementioned line and in the program's output display window at the bottom of Page 382. This line should read: "GdiVerticalFont: " + Font.GdiVerticalFont + "
" +

How the DrawString Should Be How does the Drawstring There is a typographical error in the middle of page 416. Change: "How the DrawString call interprets ampersands?" To: "How does the DrawString call interpret ampersands?"

Out-of-date Info In Paragraph On page 484, in the section titled"Bitmap File Formats",Change: "Exif The Exchangeable image format was developed by the organization now known as Japan Electronic Industry Development Association (JEIDA) for use in digital cameras. The specification is published on the Web site of the International Imaging Industry Association (I3A), formerly the Photographic and Imaging Association, Inc. (PIMA) at http://www.pima.net/standards/it10/PIMA15740/Exif_2-1.PDF."To:"Exif The Exchangeable image format was developed by the organization now known as Japan Electronics and Information Technology Industries Association (JEITA) for use in digital cameras. The specification for EXIF 2.2 can be found here: http://www.exif.org/Exif2-2.PDF. "

Correction To Save Method On page 515, in first paragraph under "More on the Image Class", remove: "The first version of Save in the following list uses the filename extension to determine the file Format, but you can be more explicit in the next two versions: ... void Save(string strFilename)"

Correction To ImageIO.cs Code On pages 779 and 780, replace the ImageIO.cs code with the following: //-------------------------------------- // ImageIO.cs (c) 2001 by Charles Petzold //-------------------------------------- using System; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Windows.Forms; class ImageIO: ImageOpen { MenuItem miSaveAs; public new static void Main() { Application.Run(new ImageIO()); } public ImageIO() { Text = strProgName = "Image I/O"; Menu.MenuItems[0].Popup += new EventHandler(MenuFileOnPopup); miSaveAs = new MenuItem("Save &As..."); miSaveAs.Click += new EventHandler(MenuFileSaveAsOnClick); Menu.MenuItems[0].MenuItems.Add(miSaveAs); } void MenuFileOnPopup(object obj, EventArgs ea) { miSaveAs.Enabled = (image != null); } void MenuFileSaveAsOnClick(object obj, EventArgs ea) { SaveFileDialog savedlg = new SaveFileDialog(); savedlg.InitialDirectory = Path.GetDirectoryName(strFileName); savedlg.FileName = Path.GetFileNameWithoutExtension(strFileName); savedlg.AddExtension = true; savedlg.Filter = "Windows Bitmap (*.bmp)|*.bmp|" + "Graphics Interchange Format (*.gif)|*.gif|" + "JPEG File Interchange Format (*.jpg)|" + "*.jpg;*.jpeg;*.jfif|" + "Portable Network Graphics (*.png)|*.png|" + "Tagged Imaged File Format (*.tif)|*.tif;*.tiff"; ImageFormat[] aif = { ImageFormat.Bmp, ImageFormat.Gif, ImageFormat.Jpeg, ImageFormat.Png, ImageFormat.Tiff }; if (savedlg.ShowDialog() == DialogResult.OK) { try { image.Save(savedlg.FileName, aif[savedlg.FilterIndex - 1]); } catch (Exception exc) { MessageBox.Show(exc.Message, Text); return; } strFileName = savedlg.FileName; Text = strProgName + " - " + Path.GetFileName(strFileName); } } }

Filename Is Stored As String There is an incorrect statement at the bottom of page 1118. Change: "Instead, the filename is stored as a file and the..." To: "Instead, the filename is stored as a string and the..."Microsoft Press is committed to providing informative and accurate books. All comments and corrections listed above are ready for inclusion in future printings of this book. If you have a later printing of this book, it may already contain most or all of the above corrections.