Touch Input Issues

Describe the bug

Since upgrading to Preview 3, WinUI 3 apps seem to be missing some touch functionality.

• Soft keyboard does not appear when tapping on text boxes. I’ve tried putting break points in the FocusEngaged and Tapped events but these are not triggered
• Long presses do not seem to register as right clicks. This means no context menus or even the visual feedback that a right click has occurred

Steps to reproduce the bug

Soft keyboard:

1. Create a new application with the [Experimental] Blank App, Packaged with WAP (WinUI 3 in Desktop)
2. Remove existing Windows App SDK nuget packages
3. Install Microsoft.WindowsAppSDK 1.0.0-preview3
4. Add a textbox to the MainWindow
5. Deploy on a touch device
6. Try to enter text using soft keyboard

Long press: 7) Add a ContextFlyout to a control on the MainWindow 8) Deploy on a touch device 9) Long press on control with ContextFlyout attached

Expected behavior

Soft keyboard should appear, allowing user to enter text

ContextFlyout should appear on long press

Screenshots

No response

IDE

Visual Studio 2019

NuGet package version

Microsoft.WindowsAppSDK 1.0.0-preview3

Project type

• Packaged

Windows version

May 2021 Update (19043)

Additional context

No response

[gabbybilka]

As an update, we are publishing a fix as part of 1.0.3 that addresses focus issues with touch caused by PreviewKeyDown and PreviewKeyUp events not firing (task.ms/38714191) @krschau).

However, the fix for the soft keyboard not appearing in TextBox is targeting 1.0.4 (task.ms/38831898 @bkudiess).

[brentafis]

@brentafis: can you provide a small example for your workaround?

Thank you

Using Visual Studio 2022 => New Project => Blank App, Packaged (WinUI3 in Desktop)

MainWindow.xaml

<Window
    x:Class="App4.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App4"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <TextBox
            GotFocus="OnTextBoxGotFocus"
            Width="200"/>
    </StackPanel>
</Window>

MainWindow.xaml.cs

using Microsoft.UI.Xaml;
using WinRT.Interop;

namespace App4
{
    public sealed partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.InitializeComponent();
        }

        private void OnTextBoxGotFocus(object sender, RoutedEventArgs e)
        {
            Windows.UI.ViewManagement.InputPane inputPane = Windows.UI.ViewManagement.InputPaneInterop.GetForWindow(WindowNative.GetWindowHandle(this));
            inputPane.TryShow();
        }
    }
}