simulate keyboard events like Keyup and keydown in UWP app

Question

How to simulate keyboard events like Keyup and keydown in UWP app.I do not want to use manual keyboard instead i have made my own keyboard but i want to add now keyboard events in it. I did not find any way in uwp and SendKeys.Send() method is also not available for UWP.

Answer 1

You can use Input Injection . The documentation has a complicated example, but it basically breaks down into declaring a capability and writing something like the following code:

        _inputInjector = InputInjector.TryCreate();
        var input = new InjectedInputKeyboardInfo();
        input.VirtualKey = value;
        input.KeyOptions = InjectedInputKeyOptions.None;
        _inputInjector.InjectKeyboardInput(new[] { input });

Where value is either a VirtualKey or a char that can be cast to one. More details in the following answer .

Answer 2

I do not want to use manual keyboard instead i have made my own keyboard but i want to add now keyboard events in it. I did not find any way in uwp and SendKeys.Send() method is also not available for UWP.

For your requirement, you could create custom event handler to simulate keyboard KeyDown , KeyUp event in your custom User Control. The key point is when to invoke your custom event handler. I have create a sample simple you could have a reference.

CustomKeyBoard.xaml

<UserControl
    x:Class="UIKeyBoardTest.CustomKeyBoard"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:UIKeyBoardTest"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:control ="using:Microsoft.Toolkit.Uwp.UI.Controls"
    mc:Ignorable="d"
    d:DesignHeight="300"
    d:DesignWidth="400">
    <Grid>
        <GridView  VerticalAlignment="Center" HorizontalAlignment="Center" ItemClick="GridView_ItemClick"  IsItemClickEnabled="True">
            <GridView.ItemsPanel>
                <ItemsPanelTemplate>
                    <VariableSizedWrapGrid  MaximumRowsOrColumns="3" Orientation="Horizontal" />
                </ItemsPanelTemplate>
            </GridView.ItemsPanel>
            <GridView.ItemTemplate>
                <DataTemplate>
                    <StackPanel Background="White"
                BorderBrush="Black"
                BorderThickness="1">
                        <TextBlock Text="{Binding }" HorizontalAlignment="Center" TextAlignment="Center" VerticalAlignment="Center" FontSize="40"  Width="55" />
                    </StackPanel>
                </DataTemplate>
            </GridView.ItemTemplate>
            <x:String>1</x:String>
            <x:String>2</x:String>
            <x:String>3</x:String>
            <x:String>4</x:String>
            <x:String>5</x:String>
            <x:String>6</x:String>
            <x:String>7</x:String>
            <x:String>8</x:String>
            <x:String>9</x:String>
        </GridView>
    </Grid>
</UserControl>

CustomKeyBoard.xaml.cs

public sealed partial class CustomKeyBoard : UserControl
{
    public delegate void BoilerLogHandler(string value);

    public event BoilerLogHandler BoilerEventLog;

    public CustomKeyBoard()
    {
        this.InitializeComponent();
    }

    private void GridView_ItemClick(object sender, ItemClickEventArgs e)
    {
        if (BoilerEventLog != null)
        {
            BoilerEventLog(e.ClickedItem.ToString());
        }
    }
}

Usage

 <TextBox x:Name="box" PlaceholderText="Please input something" Margin="0,50,0,60" />
<local:CustomKeyBoard
    HorizontalAlignment="Center"
    VerticalAlignment="Center"
    BoilerEventLog="CustomKeyBoard_BoilerEventLog" />

private void CustomKeyBoard_BoilerEventLog(string value)
{
    box.Text = value;
}