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UIElement.PreviewMouseDown Event

Occurs when any mouse button is pressed while the pointer is over this element.

Namespace: System.Windows
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public event MouseButtonEventHandler PreviewMouseDown
/** @event */
public void add_PreviewMouseDown (MouseButtonEventHandler value)

/** @event */
public void remove_PreviewMouseDown (MouseButtonEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
<object PreviewMouseDown="MouseButtonEventHandler" .../>

Identifier field

PreviewMouseDownEvent

Routing strategy

Tunneling

Delegate

MouseButtonEventHandler

  • The corresponding bubbling event is MouseDown.

  • Override OnPreviewMouseDown to implement class handling for this event in derived classes.

This event creates an alias for the Mouse.PreviewMouseDown attached event for this class, so that PreviewMouseDown is part of the class members list when UIElement is inherited as a base element. Event handlers that are attached to the PreviewMouseDown event are attached to the underlying Mouse.PreviewMouseDown attached event and receive the same event data instance.

The PreviewMouseDown event is often raised together with either PreviewMouseLeftButtonDown or PreviewMouseRightButtonDown, which correspond to a press of one of the two standard mouse buttons. PreviewMouseLeftButtonDown or PreviewMouseRightButtonDown are also routed events, but they are direct routed events, and the appropriate button-specific event is raised when the Mouse.PreviewMouseDown event reaches this element along the event route. See Remarks for PreviewMouseLeftButtonDown or PreviewMouseRightButtonDown.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0
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