Mouse Position and TranslateTransform : Mouse « Windows Presentation Foundation « VB.Net

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VB.Net » Windows Presentation Foundation » MouseScreenshots 
Mouse Position and TranslateTransform
Mouse Position and TranslateTransform
     

<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  xmlns:d="http://schemas.microsoft.com/expression/interactivedesigner/2006"
  mc:Ignorable="d"
  x:Class="InputExamples.MousePosition" Width="640" Height="480">
  <Rectangle Width="Auto" Height="Auto" x:Name="Rectangle" StrokeDashCap="Square" />
  <Ellipse Width="14" Height="14" x:Name="secondEllipse"/>
  <Ellipse d:LayoutOverrides="Height" Margin="20" Width="14" Height="14" x:Name="firstEllipse"/>
  <Ellipse d:LayoutOverrides="Width" Margin="30" Width="14" Height="14" x:Name="fourthEllipse"/>
  <Ellipse d:LayoutOverrides="Width" Margin="20" Width="14" Height="14" x:Name="thirdEllipse"/>
  <Ellipse Fill="Red" Margin="10" Width="16" Height="16" x:Name="DragEllipse"/>
</Grid>

//File:Window.xaml.vb
Imports System
Imports System.Net
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Navigation
Imports System.Windows.Shapes

Namespace InputExamples
  Public Partial Class MousePosition
    Private ellipseTransform As New TranslateTransform()

    Public Sub New()
      Me.InitializeComponent()
    End Sub

    Protected Overrides Sub OnInitialized(As EventArgs)
      MyBase.OnInitialized(e)

      DragEllipse.RenderTransform = ellipseTransform
      AddHandler CompositionTarget.Rendering, AddressOf Me.CompositionTarget_Rendering
    End Sub

    Private Sub CompositionTarget_Rendering(sender As Object, e As EventArgs)
      Dim mouse1 As Point = Mouse.GetPosition(firstEllipse)
      Dim mouse2 As Point = Mouse.GetPosition(secondEllipse)
      Dim mouse3 As Point = Mouse.GetPosition(thirdEllipse)
      Dim mouse4 As Point = Mouse.GetPosition(fourthEllipse)

      Console.WriteLine(mouse1.ToString())
      Console.WriteLine(mouse2.ToString())
      Console.WriteLine(mouse3.ToString())
      Console.WriteLine(mouse4.ToString())

      Dim position As Point = Mouse.GetPosition(DragEllipse)
      ellipseTransform.X += position.X - (DragEllipse.Width / 2)
      ellipseTransform.Y += position.Y - (DragEllipse.Height / 2)
    End Sub
  End Class
End Namespace

   
    
    
    
    
  
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