WPF制作可以拖动的图片框源码

<UserControl x:Class="Splash.FingerPictureBox"  
             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/blend/2008"   
             mc:Ignorable="d" AllowDrop="False" Height="300" Width="300">  
    <Canvas Height="239" Name="canvas1" Width="240">     
        <Image Canvas.Left="40" Canvas.Top="37" Height="183" Name="image1" Stretch="Fill" Width="168" />   
    </Canvas>  
</UserControl>  




using System;  
using System.Windows;  
using System.Windows.Controls;  
using System.Windows.Input;  
using System.Windows.Media;  
using System.Windows.Media.Imaging;  
  
namespace Splash  
{  
    /// <summary>  
    /// FingerPictureBox.xaml 的交互逻辑  
    /// </summary>  
    public partial class FingerPictureBox : UserControl  
    {  
        /// <summary>  
        /// MouseDown位置信息  

        /// </summary>  
        private Point previousMousePoint;  
  
        /// <summary>  
        /// 初始图像  
        /// </summary>  
        private ImageSource _InitialImage = null;  
  
        public FingerPictureBox()  
        {  
            InitializeComponent();           
  
            // 设置装载事件处理器  
            this.Loaded += new RoutedEventHandler(FingerPictureBox_Loaded);  
        }  
  
        private void FingerPictureBox_Loaded(object sender, RoutedEventArgs e)  
        {  
            // 设置拖动属性  
            this.AllowDrop = true;  
  
            // 设置裁剪属性  
            this.ClipToBounds = true;  
  
            // 设置拖动事件处理器  
            this.DragEnter += new DragEventHandler(FingerPictureBox_DragEnter);  
            this.Drop += new DragEventHandler(FingerPictureBox_Drop);  
  
            // 设置各元素大小和位置  
            this.image1.Width = this.canvas1.Width = this.Width - this.BorderThickness.Left - this.BorderThickness.Right;