通过输入式注入模拟用户输入
在 Windows 应用中从键盘、鼠标、触控、触控笔和游戏板等设备模拟和自动完成用户输入。
概述
输入式注入使 Windows 应用程序可以模拟从各类输入设备的输入并将输入指向任何位置，包括应用客户端区域的外部（甚至是使用管理员权限运行的应用，如注册表编辑器）。
对于需要提供包括辅助功能、测试（临时、自动）、远程访问和支持功能等功能的 Windows 应用和工具，输入式注入非常有用。
安装
若要在你的 Windows 应用中使用输入式注入 API，你需要向应用清单添加以下项目：
- 右键单击 Package.appxmanifest 文件，然后选择“ 查看代码”。
- 将以下内容插入节点
Package：xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"IgnorableNamespaces="rescap"
- 将以下内容插入节点
Capabilities：<rescap:Capability Name="inputInjectionBrokered" />
重复用户输入
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| 触摸输入注入示例 |
在此示例中，我们演示如何使用输入注入 API（Windows.UI.Input.Preview.Injection）侦听应用一个区域中的鼠标输入事件，并模拟另一个区域中的相应触摸输入事件。
从输入式注入示例（鼠标到触控）下载此示例
首先，我们设置 UI (MainPage.xaml)。
我们有两个网格区域（一个用于鼠标输入，一个用于注入触摸输入），每个区域有四个按钮。
注意
必须为网格背景分配值（在这种情况下为
Transparent），否则不会检测到指针事件。当在输入区域中检测到任何鼠标单击时，相应的触摸事件将注入输入注入区域。 游戏区域中会报告来自注入输入的按钮单击。
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <StackPanel Grid.Row="0" Margin="10"> <TextBlock Style="{ThemeResource TitleTextBlockStyle}" Name="titleText" Text="Touch input injection" HorizontalTextAlignment="Center" /> <TextBlock Style="{ThemeResource BodyTextBlockStyle}" Name="statusText" HorizontalTextAlignment="Center" /> </StackPanel> <Grid HorizontalAlignment="Center" Grid.Row="1"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Style="{ThemeResource CaptionTextBlockStyle}" Text="User mouse input area"/> <!-- Background must be set to something, otherwise pointer events are not detected. --> <Grid Name="ContainerInput" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Stretch" Background="Transparent" BorderBrush="Green" BorderThickness="2" MinHeight="100" MinWidth="300" Margin="10"> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Button Name="B1" Grid.Column="0" HorizontalAlignment="Center" Width="50" Height="50" Content="B1" /> <Button Name="B2" Grid.Column="1" HorizontalAlignment="Center" Width="50" Height="50" Content="B2" /> <Button Name="B3" Grid.Column="2" HorizontalAlignment="Center" Width="50" Height="50" Content="B3" /> <Button Name="B4" Grid.Column="3" HorizontalAlignment="Center" Width="50" Height="50" Content="B4" /> </Grid> <TextBlock Grid.Column="1" Grid.Row="0" Style="{ThemeResource CaptionTextBlockStyle}" Text="Injected touch input area"/> <Grid Name="ContainerInject" Grid.Column="1" Grid.Row="1" HorizontalAlignment="Stretch" BorderBrush="Red" BorderThickness="2" MinHeight="100" MinWidth="300" Margin="10"> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Button Name="B1i" Click="Button_Click_Injected" Content="B1i" Grid.Column="0" HorizontalAlignment="Center" Width="50" Height="50" /> <Button Name="B2i" Click="Button_Click_Injected" Content="B2i" Grid.Column="1" HorizontalAlignment="Center" Width="50" Height="50" /> <Button Name="B3i" Click="Button_Click_Injected" Content="B3i" Grid.Column="2" HorizontalAlignment="Center" Width="50" Height="50" /> <Button Name="B4i" Click="Button_Click_Injected" Content="B4i" Grid.Column="3" HorizontalAlignment="Center" Width="50" Height="50" /> </Grid> </Grid> </Grid>接下来，初始化应用。
在此代码片段中，我们声明全局对象，并在鼠标输入区域中声明指针事件（AddHandler）的侦听器，这些侦听器可能在按钮单击事件中标记为已处理。
InputInjector 对象表示用于发送输入数据的虚拟输入设备。
在处理程序中
ContainerInput_PointerPressed，我们调用触摸注入函数。在处理程序中
ContainerInput_PointerReleased，调用 UninitializeTouchInjection 以关闭 InputInjector 对象。public sealed partial class MainPage : Page { /// <summary> /// The virtual input device. /// </summary> InputInjector _inputInjector; /// <summary> /// Initialize the app, set the window size, /// and add pointer input handlers for the container. /// </summary> public MainPage() { this.InitializeComponent(); ApplicationView.PreferredLaunchViewSize = new Size(600, 200); ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.PreferredLaunchViewSize; // Button handles PointerPressed/PointerReleased in // the Tapped routed event, but we need the container Grid // to handle them also. Add a handler for both // PointerPressedEvent and PointerReleasedEvent on the input Grid // and set handledEventsToo to true. ContainerInput.AddHandler(PointerPressedEvent, new PointerEventHandler(ContainerInput_PointerPressed), true); ContainerInput.AddHandler(PointerReleasedEvent, new PointerEventHandler(ContainerInput_PointerReleased), true); } /// <summary> /// PointerReleased handler for all pointer conclusion events. /// PointerPressed and PointerReleased events do not always occur /// in pairs, so your app should listen for and handle any event that /// might conclude a pointer down (such as PointerExited, PointerCanceled, /// and PointerCaptureLost). /// </summary> /// <param name="sender">Source of the click event</param> /// <param name="e">Event args for the button click routed event</param> private void ContainerInput_PointerReleased( object sender, PointerRoutedEventArgs e) { // Prevent most handlers along the event route from handling event again. e.Handled = true; // Shut down the virtual input device. _inputInjector.UninitializeTouchInjection(); } /// <summary> /// PointerPressed handler. /// PointerPressed and PointerReleased events do not always occur /// in pairs. Your app should listen for and handle any event that /// might conclude a pointer down (such as PointerExited, /// PointerCanceled, and PointerCaptureLost). /// </summary> /// <param name="sender">Source of the click event</param> /// <param name="e">Event args for the button click routed event</param> private void ContainerInput_PointerPressed( object sender, PointerRoutedEventArgs e) { // Prevent most handlers along the event route from // handling the same event again. e.Handled = true; InjectTouchForMouse(e.GetCurrentPoint(ContainerInput)); } ... }下面是触摸输入注入函数。
首先，调用 TryCreate 来实例化 InputInjector 对象。
然后，我们使用 InjectedInputVisualizationMode 的 InjectedTouchInjection 调用 InitializeTouchInjection。
Default计算注入点后，调用 InjectedInputTouchInfo 来初始化要注入的触摸点列表（在本示例中，我们将创建一个对应于鼠标输入指针的触摸点）。
最后，我们调用 InjectTouchInput 两次，第一个用于向下指针，第二个用于向上指针。
/// <summary> /// Inject touch input on injection target corresponding /// to mouse click on input target. /// </summary> /// <param name="pointerPoint">The mouse click pointer.</param> private void InjectTouchForMouse(PointerPoint pointerPoint) { // Create the touch injection object. _inputInjector = InputInjector.TryCreate(); if (_inputInjector != null) { _inputInjector.InitializeTouchInjection( InjectedInputVisualizationMode.Default); // Create a unique pointer ID for the injected touch pointer. // Multiple input pointers would require more robust handling. uint pointerId = pointerPoint.PointerId + 1; // Get the bounding rectangle of the app window. Rect appBounds = Windows.UI.ViewManagement.ApplicationView.GetForCurrentView().VisibleBounds; // Get the top left screen coordinates of the app window rect. Point appBoundsTopLeft = new Point(appBounds.Left, appBounds.Top); // Get a reference to the input injection area. GeneralTransform injectArea = ContainerInject.TransformToVisual(Window.Current.Content); // Get the top left screen coordinates of the input injection area. Point injectAreaTopLeft = injectArea.TransformPoint(new Point(0, 0)); // Get the screen coordinates (relative to the input area) // of the input pointer. int pointerPointX = (int)pointerPoint.Position.X; int pointerPointY = (int)pointerPoint.Position.Y; // Create the point for input injection and calculate its screen location. Point injectionPoint = new Point( appBoundsTopLeft.X + injectAreaTopLeft.X + pointerPointX, appBoundsTopLeft.Y + injectAreaTopLeft.Y + pointerPointY); // Create a touch data point for pointer down. // Each element in the touch data list represents a single touch contact. // For this example, we're mirroring a single mouse pointer. List<InjectedInputTouchInfo> touchData = new List<InjectedInputTouchInfo> { new InjectedInputTouchInfo { Contact = new InjectedInputRectangle { Left = 30, Top = 30, Bottom = 30, Right = 30 }, PointerInfo = new InjectedInputPointerInfo { PointerId = pointerId, PointerOptions = InjectedInputPointerOptions.PointerDown | InjectedInputPointerOptions.InContact | InjectedInputPointerOptions.New, TimeOffsetInMilliseconds = 0, PixelLocation = new InjectedInputPoint { PositionX = (int)injectionPoint.X , PositionY = (int)injectionPoint.Y } }, Pressure = 1.0, TouchParameters = InjectedInputTouchParameters.Pressure | InjectedInputTouchParameters.Contact } }; // Inject the touch input. _inputInjector.InjectTouchInput(touchData); // Create a touch data point for pointer up. touchData = new List<InjectedInputTouchInfo> { new InjectedInputTouchInfo { PointerInfo = new InjectedInputPointerInfo { PointerId = pointerId, PointerOptions = InjectedInputPointerOptions.PointerUp } } }; // Inject the touch input. _inputInjector.InjectTouchInput(touchData); } }最后，处理输入注入区域中的任何按钮 单击 路由事件，并使用单击按钮的名称更新 UI。
