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The IsLooped property controls whether or not the sound plays repeatedly. It is normally set to false, which means that the sound will play once and then stop. If this property is set to true, the sound will repeat forever. You can also modify the Pitch and Pan properties of a playing sound. Changing the pitch of a sound makes it higher or lower, and you can set the pitch value between 1 (half the original pitch) and +1 (double the original pitch). This is very useful if you want to make it sound like an engine is speeding up. The Pan value lets you move the sound between the left and right speakers. It can be set between 1 (hard left) and +1 (hard right). We can easily use the values from the gamepad thumbsticks to let us move our raygun sound around and change its pitch. We will find out more about the thumbsticks in 12, Games, Objects, and State.

separator. (You need DirectCast because the Clone method returns an Object.)

Dim nfi As NumberFormatInfo = _

DirectCast(NumberFormatInfo.CurrentInfo.Clone, NumberFormatInfo) The nfi object is a read-write object, so you can change its properties. nfi.NumberDecimalSeparator = ," nfi.NumberGroupSeparator = You can now format a value with the custom NumberFormatInfo object. Dim sngValue As Single = 12345.5 Console.WriteLine(sngValue.ToString( ##,##0.00", nfi)) => 12 345,50

Tip You cannot make changes to the font schemes that come with Publisher, but you can create a custom font scheme, either from scratch or based on an existing scheme. You can change, rename, and delete custom font schemes. In this exercise, you will trace the continuation of a story; move, insert, and delete pages; insert and remove Continued notices; format text in columns; and connect and disconnect text boxes.

All numeric types support the Parse shared method, which parses the string passed as an argument and returns the corresponding numeric value. The simplest form of the Parse method takes one string argument:

shootSoundEffectInstance.Pitch = pad1.ThumbSticks.Left.Y; shootSoundEffectInstance.Pan = pad1.ThumbSticks.Left.X;

Next line assigns 1234 to the variable. Dim shoValue As Short = Short.Parse( 1234 )

The second overloaded form of the Parse method takes a NumberStyle enumerated value as its second argument. NumberStyle is a bit-coded value that specifies which portions of the number are allowed in the string being parsed. Valid NumberStyle val-

Part III:

ues are AllowLeadingWhite (1), AllowTrailingWhite (2), AllowLeadingSign (4), AllowTrailingSign (8), AllowParentheses (16), AllowDecimalPoint (32), AllowThousand (64), AllowExponent (128), AllowCurrencySymbol (256), and AllowHexSpecifier (512). You can specify which portions of the strings are valid by using the OR operator on these values, or you can use some other predefined compound values, such as Any (511, allows everything), Integer (7, allows trailing sign and leading/trailing white), Number (111, like Integer but allows thousands separator and decimal point), Float (167, like Integer but allows decimal separator and exponent), and Currency (383, allows everything except exponent). The following example extracts a Double from a string and recognizes white spaces and all the supported formats:

USE the ADatumNews publication. This practice le is located in the Documents\Microsoft Press\SBS_Publisher2007\TextPublications folder. OPEN the ADatumNews publication, and close the Format Publication task pane.

Sample Code: 03 RayGun The 03 RayGun w th p tch and pan project n the resources for th s chapter conta ns a program that repeats a sound samp e as ong as the A button s he d down on the gamepad You can use the eft thumbst ck to change the p tch of the sound and a so move t from eft to r ght

Dim dblValue As Double = Double.Parse( 1,234.56E6 dblValue is assigned the value 1234560000. , NumberStyles.Any)

You can be more specific about what is valid and what isn t:

Dim style As NumberStyles = NumberStyles.AllowDecimalPoint _ Or NumberStyles.AllowLeadingSign This works and assigns 123.45 to sngValue. Dim sngValue As Single = Single.Parse( -123.45", style) This throws a FormatException because of the thousands separator. sngValue = Single.Parse( 12,345.67", style)

<System.Diagnostics.DebuggerStepThrough()> _

Private Sub InitializeComponent()

the page sorter, click the Page 2 button to display pages 2 and 3. The publication contains ve stories: Two start on page 1 and continue later in the publication, two start on page 2 and continue later in the publication, and one complete story appears on page 3.

Your younger brother is quite keen on a raygun of his own and rushes off to create this program. However, he is soon back complaining that the program is faulty because It goes wrong when I run it. You try the program, and sure enough, you get the screen shown in Figure 7-5.

Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)

Me.ClientSize = New System.Drawing.Size(292, 273)

Me.Name = Form1"

Me.Text = Form1"