Question

我有一台平板电脑必须运行带有数字输入字段的应用程序。但是，我在弹出显示数字小键盘的Windows键盘（TabTip.exe）时遇到问题。

单击文本字段时，键盘需要自动弹出。

我设法通过在TextBox事件处理程序中运行TabTip.exe来显示每个字段上的键盘，但它显示了正常的键盘布局。这是使用这个问题的答案：Show & hiding the Windows 8 on screen keyboard from WPF

    protected override void OnStartup(StartupEventArgs eventArgs)
    {

        // Popup keyboard, Select All on getting focus.
        EventManager.RegisterClassHandler(typeof(TextBox), UIElement.GotFocusEvent,
                                new RoutedEventHandler(GotFocus_Event), true);
        EventManager.RegisterClassHandler(typeof(TextBox), UIElement.LostFocusEvent,
                                new RoutedEventHandler(LostFocus_Event), true);

    }

    private static void GotFocus_Event(object sender, RoutedEventArgs e)
    {
        // The popup keyboard.
        OpenTouchKeyboard(sender, e);
    }

    private static void OpenTouchKeyboard(object sender, RoutedEventArgs e)
    {
        var textBox = e.OriginalSource as TextBox;
        if (textBox != null && IsSurfaceKeyboardAttached())
        {
            var path = @"C:\Program Files\Common Files\Microsoft Shared\ink\TabTip.exe";
            Process.Start(path);
            textBox.BringIntoView();
        }
    }

我在下一页中读到您可以使用文本框＆＃34; InputScope＆＃34;属性，以指示它应该是一个数字小键盘。

https://msdn.microsoft.com/nl-nl/library/windows/apps/xaml/mt280229?f=255&MSPPError=-2147217396#touch_keyboard_index_for_windows_and_windows_phone

类似于<TextBox Header="Name" InputScope="Number"/>

然而，这没有任何效果，它仍然会弹出常规布局。此外，我发现很难相信InputScope只是将自己传递给TabTip.exe进程的执行，而没有某种方式将它们连接起来。

我也遇到过这样的问题：Start TabTip with numpad view open建议在每次调用TabTip.exe之前编辑注册表，但这看起来非常混乱，在Windows 10中显然不可靠。

是否有命令行参数或可以传递给它的东西？

Answer 1

我已经找到了答案，感谢MSDN指出Automatic Touch Keyboard。

所以基本上我一直都是错误的方式

正确的方法：添加对InputPanelConfigurationLib.dll和UIAutomationClient.dll

的引用

然后禁用墨水输入......

using System; 
using System.Reflection; 
using System.Windows.Input; 

namespace ModernWPF.Win8TouchKeyboard.Desktop 
{ 
    public static class InkInputHelper 
    { 
        public static void DisableWPFTabletSupport() 
        { 
            // Get a collection of the tablet devices for this window.   
            TabletDeviceCollection devices = System.Windows.Input.Tablet.TabletDevices; 

            if (devices.Count > 0) 
            { 
                // Get the Type of InputManager. 
                Type inputManagerType = typeof(System.Windows.Input.InputManager); 

                // Call the StylusLogic method on the InputManager.Current instance. 
                object stylusLogic = inputManagerType.InvokeMember("StylusLogic", 
                            BindingFlags.GetProperty | BindingFlags.Instance | BindingFlags.NonPublic, 
                            null, InputManager.Current, null); 

                if (stylusLogic != null) 
                { 
                    //  Get the type of the stylusLogic returned from the call to StylusLogic. 
                    Type stylusLogicType = stylusLogic.GetType(); 

                    // Loop until there are no more devices to remove. 
                    while (devices.Count > 0) 
                    { 
                        // Remove the first tablet device in the devices collection. 
                        stylusLogicType.InvokeMember("OnTabletRemoved", 
                                BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.NonPublic, 
                                null, stylusLogic, new object[] { (uint)0 }); 
                    } 
                } 
            } 
        } 
    } 
}

并在MainWindow.xaml.cs ...

public MainWindow() 
{ 
    InitializeComponent(); 

    // Disables inking in the WPF application and enables us to track touch events to properly trigger the touch keyboard 
    InkInputHelper.DisableWPFTabletSupport(); 

    this.Loaded += MainWindow_Loaded; 
} 

private void MainWindow_Loaded(object sender, RoutedEventArgs e) 
{ 

    System.Windows.Automation.AutomationElement asForm = 
        System.Windows.Automation.AutomationElement.FromHandle(new WindowInteropHelper(this).Handle); 


    InputPanelConfigurationLib.InputPanelConfiguration inputPanelConfig = new InputPanelConfigurationLib.InputPanelConfiguration(); 
    inputPanelConfig.EnableFocusTracking(); 
}

瞧，选择一个文本框可以调出键盘。但是，现在，它会关注InputScope，如果我设置为Number会导致显示数字小键盘。

Tabtip和InputScope - 显示数字小键盘

1 个答案: