Stylus.PreviewStylusDown Attached Event

Occurs when user touches the tip of the stylus to the tablet.

Namespace:  System.Windows.Input
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
See AddPreviewStylusDownHandler, RemovePreviewStylusDownHandler
<object Stylus.PreviewStylusDown="StylusDownEventHandler" .../>

Identifier field

PreviewStylusDownEvent

Routing strategy

Tunneling

Delegate

StylusDownEventHandler

This is an attached event. WPF implements attached events as routed events. An attached event is, fundamentally, a XAML language concept used to reference events that are handled on objects that do not, themselves, define events. WPF further expands an attached event's capabilities, allowing it to traverse a route. Attached events do not have a direct handling syntax in code; to attach handlers for a routed event in code, use a designated Add*Handler method. For details, see Attached Events Overview.

The following example demonstrates how to ensure that the stylus is not captured when the user touches the stylus to the tablet. This example assumes that the PreviewStylusDown event is connected to the event handler.

Private Sub Window1_PreviewStylusDown(ByVal sender As Object, ByVal e As StylusDownEventArgs) _
    Handles Me.PreviewStylusDown

    Dim capturedElement As IInputElement = Stylus.Captured

    If Not (capturedElement Is Nothing) Then
        capturedElement.ReleaseStylusCapture()
    End If 

End Sub 'Window1_PreviewStylusDown

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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