WIn_RustTools/RustTools/MainWindow.xaml.cs

using RustTools.Helpers;
using RustTools.muqing;
using Windows.UI.ViewManagement;

namespace RustTools;

public sealed partial class MainWindow : WindowEx
{
    private Microsoft.UI.Dispatching.DispatcherQueue dispatcherQueue;

    private UISettings settings;

    public MainWindow()
    {
        InitializeComponent();
        //AppWindow.SetIcon("Assets/tool.png");
        AppWindow.SetIcon(Path.Combine(AppContext.BaseDirectory, "Assets/WindowIcon.ico"));
        Content = null;
        Title = "AppDisplayName".GetLocalized();

        // Theme change code picked from https://github.com/microsoft/WinUI-Gallery/pull/1239
        dispatcherQueue = Microsoft.UI.Dispatching.DispatcherQueue.GetForCurrentThread();
        settings = new UISettings();
        settings.ColorValuesChanged += Settings_ColorValuesChanged; // cannot use FrameworkElement.ActualThemeChanged event

        //gj.sc(Directory.GetCurrentDirectory());
        if(wj.cz(wj.FILE.UUID))
        {
            gj.sc(wj.dqwb(wj.FILE.UUID));
        }
        else
        {
            wj.xrwb("win.uuid", gj.GetUUID());
        }
    }

    // this handles updating the caption button colors correctly when indows system theme is changed
    // while the app is open
    private void Settings_ColorValuesChanged(UISettings sender, object args)
    {
        // This calls comes off-thread, hence we will need to dispatch it to current app's thread
        dispatcherQueue.TryEnqueue(() =>
        {
            TitleBarHelper.ApplySystemThemeToCaptionButtons();
        });
    }
}