FakeDeck/FakeDeckUI/FakeDeck/MainWindow.xaml

<Window x:Name="FakeDeckUI" x:Class="FakeDeck.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:FakeDeck"
        mc:Ignorable="d"
        Title="MainWindow"
        Activated="FakeDeckUI_Activated"
        WindowStartupLocation="CenterScreen"
        Width="280" Height="340">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="270"/>
            <RowDefinition Height="50*"/>
        </Grid.RowDefinitions>
        <Image x:Name="qr_code" Margin="10,10,10,0"/>
        <TextBox Margin="10,10,10,10" TextWrapping="Wrap" Text="TextBox" Grid.Row="1" Height="20" VerticalAlignment="Center"/>
    </Grid>
</Window>