Make an object follow the mouse pointer as it moves on the screen.

    

<Window x:Class="WpfApplication1.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="Red">
    <Ellipse Name="ellipse" Fill="LightBlue" Width="100" Height="100"/>
  </Canvas>
</Window>
//File:Window.xaml.vb

Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Shapes
Imports System.Windows.Input


Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window

    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub MouseMoveHandler(sender As Object, e As MouseEventArgs)
      ' Get the x and y coordinates of the mouse pointer.
      Dim position As Point = e.GetPosition(Me)
      Dim pX As Double = position.X
      Dim pY As Double = position.Y

      ellipse.Width = pX
      ellipse.Height = pY
    End Sub
  End Class
End Namespace

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7.	Use Mouse.AddPreviewMouseDownHandler(myEllipse, PreviewMouseDownEllipse);
8.	Use Mouse.AddMouseDownHandler(myEllipse, MouseDownEllipse);
9.	Use Mouse.PreviewMouseDown /Mouse.MouseDown Attribute from Grid element
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14.	Replease mouse with Mouse.Capture(null)
15.	Retrieving the mouse position relative to controls on a Window
16.	Mouse cursor override and clear
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18.	Use the Mouse Wheel action methods that are defined by the IScrollInfo interface
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Make an object follow the mouse pointer as it moves on the screen. : Mouse « Windows Presentation Foundation « VB.Net

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