PowerToys/Wox/HotkeyControl.xaml

<UserControl x:Class="Wox.HotkeyControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             Height="24"
             d:DesignHeight="300" d:DesignWidth="300">
    <Grid >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="150"></ColumnDefinition>
            <ColumnDefinition Width="120"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <TextBox x:Name="tbHotkey" TabIndex="100" VerticalContentAlignment="Center" Grid.Column="0" PreviewKeyDown="TbHotkey_OnPreviewKeyDown"></TextBox>
        <TextBlock x:Name="tbMsg" Visibility="Hidden" Margin="5 0 0 0" VerticalAlignment="Center" Grid.Column="1" ></TextBlock>
    </Grid>
</UserControl>