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

image_pdfimage_print


   
  

<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.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Shapes;
using System.Windows.Input;


namespace WpfApplication1
{
    public partial class Window1 : Window
    {

        public Window1()
        {
            InitializeComponent();
        }
        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;

            ellipse.Width = pX;
            ellipse.Height = pY;
        }
    }
}