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Set cursor area

<Window x: Class="WpfApplication1.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="cursors" Height="450" Width="600" Loaded="OnLoaded">   <Window.Resources>     <Style TargetType="{x:Type RadioButton}">       <Setter Property="Margin" Value="3" />     </Style>     <Style TargetType="{x:Type Label}">       <Setter Property="FontSize" Value="14" />       <Setter Property="HorizontalAlignment" Value="Center" />     </Style>     <Style TargetType="{x:Type Border}">       <Setter Property="BorderBrush" Value="LightBlue" />       <Setter Property="BorderThickness" Value="2" />       <Setter Property="Margin" Value="10" />     </Style>   </Window.Resources>   <StackPanel>     <Border Width="300">       <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">         <StackPanel Margin="10">           <Label HorizontalAlignment="Left">Cursor Type</Label>           <ComboBox Width="100" SelectionChanged="CursorTypeChanged" HorizontalAlignment="Left" Name="CursorSelector">             <ComboBoxItem Content="AppStarting" />             <ComboBoxItem Content="ArrowCD" />           </ComboBox>         </StackPanel>         <StackPanel Margin="10">           <Label HorizontalAlignment="Left">Scope of Cursor</Label>           <StackPanel>             <RadioButton Name="rbScopeElement" IsChecked="True" Checked="CursorScopeSelected">Display Area Only</RadioButton>             <RadioButton Name="rbScopeApplication" Checked="CursorScopeSelected">Entire Appliation</RadioButton>           </StackPanel>         </StackPanel>       </StackPanel>     </Border>     <Border Name="DisplayArea" Height="250" Width="400" Margin="20" Background="AliceBlue">       <Label HorizontalAlignment="Center">         Move Mouse Pointer Over This Area       </Label>     </Border>   </StackPanel> </Window> //File:Window.xaml.vb Imports System Imports System.Windows Imports System.Windows.Controls Imports System.Windows.Media Imports System.Windows.Input Imports System.IO Imports System.Collections Namespace WpfApplication1   Public Partial Class Window1     Inherits Window     Private CustomCursor As Cursor     Public Sub New()       CustomCursor = New Cursor(Directory.GetCurrentDirectory() & Path.DirectorySeparatorChar & "CustomCursor.cur")     End Sub     Public Sub CursorTypeChanged(sender As Object, e As SelectionChangedEventArgs)       Dim source As ComboBox = TryCast(e.Source, ComboBox)       If source IsNot Nothing Then         Dim selectedCursor As ComboBoxItem = TryCast(source.SelectedItem, ComboBoxItem)         Select Case selectedCursor.Content.ToString()           Case "AppStarting"             DisplayArea.Cursor = Cursors.AppStarting             Exit Select           Case "ArrowCD"             DisplayArea.Cursor = Cursors.ArrowCD             Exit Select           Case Else             Exit Select         End Select         If cursorScopeElementOnly = False Then           Mouse.OverrideCursor = DisplayArea.Cursor         End If       End If     End Sub     Public Sub CursorScopeSelected(sender As Object, e As RoutedEventArgs)       Dim source As RadioButton = TryCast(e.Source, RadioButton)       If source IsNot Nothing Then         If source.Name = "rbScopeElement" Then           cursorScopeElementOnly = True           Mouse.OverrideCursor = Nothing         End If         If source.Name = "rbScopeApplication" Then           cursorScopeElementOnly = False           Mouse.OverrideCursor = DisplayArea.Cursor         End If       End If     End Sub     Public Sub OnLoaded(sender As Object, e As RoutedEventArgs)       DirectCast(CursorSelector.Items(0), ComboBoxItem).IsSelected = True     End Sub     Private cursorScopeElementOnly As Boolean = True   End Class End Namespace