<Window x:Class="WPFForStudy.Manipulation"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="Move, Size, and Rotate the Square"        WindowState="Maximized"        ManipulationStarting="Window_ManipulationStarting"        ManipulationDelta="Window_ManipulationDelta"        ManipulationInertiaStarting="Window_InertiaStarting">    <Window.Resources>        <!--The movement, rotation, and size of the Rectangle is specified by its RenderTransform.-->        <MatrixTransform x:Key="InitialMatrixTransform">            <MatrixTransform.Matrix>                <Matrix OffsetX="200" OffsetY="200"/>            </MatrixTransform.Matrix>        </MatrixTransform>    </Window.Resources>    <Canvas>        <Rectangle Fill="Red" Name="manRect"                 Width="200" Height="200"                  RenderTransform="{StaticResource InitialMatrixTransform}"                 IsManipulationEnabled="true" />        <Rectangle Fill="Green" Name="manRect2"                 Width="100" Height="100"                  RenderTransform="{StaticResource InitialMatrixTransform}"                 IsManipulationEnabled="true" />    </Canvas></Window>

using System.Windows;using System.Windows.Input;using System.Windows.Media;using System.Windows.Shapes;namespace WPFForStudy{    /// <summary>    /// Manipulation.xaml 的交互逻辑    /// </summary>    public partial class Manipulation : Window    {        public Manipulation()        {            InitializeComponent();        }        void Window_ManipulationStarting(object sender, ManipulationStartingEventArgs e)        {            e.ManipulationContainer = this;            e.Handled = true;        }        void Window_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)        {            // Get the Rectangle and its RenderTransform matrix.            Rectangle rectToMove = e.OriginalSource as Rectangle;            Matrix rectsMatrix = ((MatrixTransform)rectToMove.RenderTransform).Matrix;            // Rotate the Rectangle.            rectsMatrix.RotateAt(e.DeltaManipulation.Rotation,                                 e.ManipulationOrigin.X,                                 e.ManipulationOrigin.Y);            // Resize the Rectangle.  Keep it square             // so use only the X value of Scale.            rectsMatrix.ScaleAt(e.DeltaManipulation.Scale.X,                                e.DeltaManipulation.Scale.X,                                e.ManipulationOrigin.X,                                e.ManipulationOrigin.Y);            // Move the Rectangle.            rectsMatrix.Translate(e.DeltaManipulation.Translation.X,                                  e.DeltaManipulation.Translation.Y);            // Apply the changes to the Rectangle.            rectToMove.RenderTransform = new MatrixTransform(rectsMatrix);            Rect containingRect =                new Rect(((FrameworkElement)e.ManipulationContainer).RenderSize);            Rect shapeBounds =                rectToMove.RenderTransform.TransformBounds(                    new Rect(rectToMove.RenderSize));            // Check if the rectangle is completely in the window.            // If it is not and intertia is occuring, stop the manipulation.            if (e.IsInertial && !containingRect.Contains(shapeBounds))            {                e.Complete();            }            e.Handled = true;        }        void Window_InertiaStarting(object sender, ManipulationInertiaStartingEventArgs e)        {            // Decrease the velocity of the Rectangle‘s movement by             // 10 inches per second every second.            // (10 inches * 96 pixels per inch / 1000ms^2)            e.TranslationBehavior.DesiredDeceleration = 10.0 * 96.0 / (1000.0 * 1000.0);            // Decrease the velocity of the Rectangle‘s resizing by             // 0.1 inches per second every second.            // (0.1 inches * 96 pixels per inch / (1000ms^2)            e.ExpansionBehavior.DesiredDeceleration = 0.1 * 96 / (1000.0 * 1000.0);            // Decrease the velocity of the Rectangle‘s rotation rate by             // 2 rotations per second every second.            // (2 * 360 degrees / (1000ms^2)            e.RotationBehavior.DesiredDeceleration = 720 / (1000.0 * 1000.0);            e.Handled = true;        }    }}