PowerToys/src/settings-ui/PowerToys.Settings/MainWindow.xaml

<Window x:Class="PowerToys.Settings.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:PowerToys.Settings"
        xmlns:Controls="clr-namespace:Microsoft.Toolkit.Wpf.UI.Controls;assembly=Microsoft.Toolkit.Wpf.UI.Controls"
        xmlns:xaml="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
        mc:Ignorable="d"
        Height="860"
        MinHeight="400"
        Width="1180"
        MinWidth="480"
        WindowStartupLocation="CenterScreen"
        Closing="MainWindow_Closing"
        Loaded="MainWindow_Loaded"
        Activated="MainWindow_Activated">
    <Grid>
        <xaml:WindowsXamlHost InitialTypeName="Microsoft.PowerToys.Settings.UI.Views.ShellPage" ChildChanged="WindowsXamlHost_ChildChanged" />
    </Grid>
</Window>