C# 4 and .NET 4

1076 ❘ ChaPTer 37 creAtinG dOcuments with wpf
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FontStyle values are defined by the FontStyles class that offers Normal, Italic, and Oblique.
With FontStretch you can specify the degrees to stretch the font compared to the normal aspect
ratio. FrontStretch defines predefined stretches that range from 50% (UltraCondensed) to
200% (UltraExpanded). Predefined values in between the range are ExtraCondensed (62.5%),
Condensed (75%), SemiCondensed (87.5%), Normal (100%), SemiExpanded (112.5%), Expanded
(125%), ExtraExpanded (150%)
FontSize is of type double where you can specify the size of the font in device-independent units,
inches, centimeters, and points.
With FontFamily you define the name of the preferred font-family, e.g., Arial or Times New Roman.
With this property you can specify a list of font family names so if one font is not available, the next
one in the list is used. (If neither the selected font nor the alternate font are available, a flow document
falls back to the default MessageFontFamily.) You can also reference a font family from a resource
or use a URI to reference a font from a server. With fixed documents there’s no fallback on a font not
available because the font is available with the document.
To give you a feel for the look of different fonts, the following sample WPF application includes a ListBox.
The ListBox defines an ItemTemplate for every item in the list. This template uses four TextBlock
elements where the FontFamily is bound to the Source property of a FontFamily object. With different
TextBlock elements FontWeight and FontStyle are set:
code snippet ShowFonts/ShowFontsWindow.xaml
In the code-behind, the data context is set to the result of the SystemFontFamilies property of the
System.Windows.Media.Font class:
public partial class ShowFontsWindow : Window
{
public ShowFontsWindow()
{
InitializeComponent();
}
}
this.DataContext = Fonts.SystemFontFamilies;
code snippet ShowFonts/ShowFontsWindow.xaml.cs
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