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Check the mouse event source

<Window x:Class="WpfApplication1.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="MouseInput" Height="300" Width="300">     <Grid>       <Ellipse Fill="Blue" x:Name="myEllipse" />     </Grid> </Window> //File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; using System.Diagnostics; namespace WpfApplication1 {     public partial class Window1 : System.Windows.Window     {         public Window1()         {             InitializeComponent();         }         private void StartSlowWork()         {             Mouse.OverrideCursor = Cursors.AppStarting;         }         private void SlowWorkCompleted()         {             Mouse.OverrideCursor = null;         }         protected override void OnMouseDown(MouseButtonEventArgs e)         {             base.OnMouseDown(e);             if (e.Source != myEllipse)             {                 StartSlowWork();             }         }         protected override void OnMouseUp(MouseButtonEventArgs e)         {             base.OnMouseUp(e);             SlowWorkCompleted();         }     } }