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DrawingAttributes Class

Specifies the appearance of a Stroke

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

'Declaration
Public Class DrawingAttributes _
	Implements INotifyPropertyChanged
'Usage
Dim instance As DrawingAttributes
This class is not typically used in XAML.

Use the DrawingAttributes property to specify settings such as color, width, transparency, and the shape of the stylus tip for a Stroke.

Use the DefaultDrawingAttributes property to specify the drawing attributes for the strokes added to an InkCanvas. Only strokes that are added after the DefaultDrawingAttributes undergo change show the updated attributes. The appearance of the strokes that are already on the InkCanvas does not change.

For a list of initial property values for an instance of the DrawingAttributes class, see the DrawingAttributes constructor.

The following example demonstrates how to use two DrawingAttributes objects to simulate using a pen and a highlighter on the same InkCanvas. The example assumes the root element in the XAML file is a DockPanel called root. It also assumes that there is a Button called switchHighlighter and that the Click event is connected to the event handler defined in this example.

Private WithEvents inkCanvas1 As New InkCanvas()
Private inkDA As DrawingAttributes
Private highlighterDA As DrawingAttributes
Private useHighlighter As Boolean = False 

' Add an InkCanvas to the window, and allow the user to  
' switch between using a green pen and a purple highlighter  
' on the InkCanvas. 
Private Sub WindowLoaded(ByVal sender As Object, ByVal e As RoutedEventArgs)

    inkCanvas1.Background = Brushes.DarkSlateBlue
    inkCanvas1.DefaultDrawingAttributes.Color = Colors.SpringGreen

    ' Add the InkCanvas to the DockPanel, named root.
    root.Children.Add(inkCanvas1)

    ' Set up the DrawingAttributes for the pen.
    inkDA = New DrawingAttributes()
    With inkDA
        .Color = Colors.SpringGreen
        .Height = 5
        .Width = 5
        .FitToCurve = True 
    End With 

    ' Set up the DrawingAttributes for the highlighter.
    highlighterDA = New DrawingAttributes()
    With highlighterDA
        .Color = Colors.Orchid
        .IsHighlighter = True
        .IgnorePressure = True
        .StylusTip = StylusTip.Rectangle
        .Height = 30
        .Width = 10
    End With

    inkCanvas1.DefaultDrawingAttributes = inkDA

End Sub 'WindowLoaded


' Create a button called switchHighlighter and use  
' SwitchHighlighter_Click to handle the Click event.   
' The useHighlighter variable is a boolean that indicates 
' whether the InkCanvas renders ink as a highlighter. 

' Switch between using the 'pen' DrawingAttributes and the  
' 'highlighter' DrawingAttributes when the user clicks on . 
Private Sub SwitchHighlighter_Click(ByVal sender As [Object], ByVal e As RoutedEventArgs)

    useHighlighter = Not useHighlighter

    If useHighlighter Then
        switchHighlighter.Content = "Use Pen"
        inkCanvas1.DefaultDrawingAttributes = highlighterDA
    Else

        switchHighlighter.Content = "Use Highlighter"
        inkCanvas1.DefaultDrawingAttributes = inkDA
    End If 

End Sub 'SwitchHighlighter_Click

System.Object
  System.Windows.Ink.DrawingAttributes

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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