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Typography.ContextualAlternates Property

Gets or sets a value that determines whether custom glyph forms can be used based upon the context of the text being rendered.

Namespace:  System.Windows.Documents
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

public bool ContextualAlternates { get; set; }
<object Typography.ContextualAlternates="bool"/>

Property Value

Type: System.Boolean
true if custom glyph forms can be used; otherwise, false. The default value is true.

This property gets or sets a value on the object that owns a Typography property, which is the only way to access a Typography class instance. In addition, this property supports an attached property usage so that it can be set on text-containing objects in XAML.

Random contextual alternates provide multiple substitute glyphs for a single character. When implemented with script-type fonts, this feature can simulate handwriting by using of a set of randomly chosen glyphs with slight differences in appearance. The following text uses random contextual alternates for the Lindsey font. Notice that the letter "a" varies slightly in appearance

Example of random contextual alternates

Text using OpenType random contextual alternates

The following code example shows how to define random contextual alternates for the Lindsey font, using the ContextualAlternates property.

<TextBlock FontFamily="Lindsey">
  <Run Typography.ContextualAlternates="True">
    a banana in a cabana
  </Run>
</TextBlock>

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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