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UIElement.MouseMove 事件

Occurs when the mouse pointer moves while over this element.

命名空間: System.Windows
組件: PresentationCore (在 presentationcore.dll 中)
XML 命名空間:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public event MouseEventHandler MouseMove
/** @event */
public final void add_MouseMove (MouseEventHandler value)

/** @event */
public final void remove_MouseMove (MouseEventHandler value)

在 JScript 中,您可以處理類別所定義的事件,但不可以定義自己的事件。
<object MouseMove="MouseEventHandler" .../>

Identifier field

MouseMoveEvent

Routing strategy

Bubbling

Delegate

MouseEventHandler

  • The corresponding tunneling event is PreviewMouseMove.

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

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

This example shows how to change the dimensions of an object when the mouse pointer moves on the screen.

The example includes an Extensible Application Markup Language (XAML) file that creates the user interface (UI) and a code-behind file that creates the event handler. For the complete sample, see Moving an Object with the Mouse Pointer Sample.

The following XAML creates the UI, which consists of an Ellipse inside of a StackPanel, and attaches the event handler for the MouseMove event.

<Window x:Class="WCSamples.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="mouseMoveWithPointer"
    Height="400"
    Width="500"
    >
  <Canvas MouseMove="MouseMoveHandler"
          Background="LemonChiffon">
    <Ellipse Name="ellipse" Fill="LightBlue" 
             Width="100" Height="100"/>
  </Canvas>
</Window>

The following code behind creates the MouseMove event handler. When the mouse pointer moves, the height and the width of the Ellipse are increased and decreased.

// raised when the mouse pointer moves.
// Expands the dimensions of an Ellipse when the mouse moves.
private void MouseMoveHandler(object sender, MouseEventArgs e)
{
    // Get the x and y coordinates of the mouse pointer.
    Point position = e.GetPosition(this);
    double pX = position.X;
    double pY = position.Y;

    // Sets the Height/Width of the circle to the mouse coordinates.
    ellipse.Width = pX;
    ellipse.Height = pY;
}

Windows Vista、Microsoft Windows XP SP2 和 Windows Server 2003 SP1 支援 Microsoft .NET Framework 3.0。

.NET Framework

支援版本:3.0
顯示: